if a solar eclipse occurs when the moon is relatively far from earth, so that its full shadow (umbra) does not reach earth, then people directly behind the full shadow will experience if a solar eclipse occurs when the moon is relatively far from earth, so that its full shadow (umbra) does not reach earth, then people directly behind the full shadow will experience a penumbral eclipse. an annular eclipse. no eclipse. a total solar eclipse. a partial solar eclipse.

Answer:

Fossil-fueled cars are still outnumbering the alternative and replacement-fueled cars because they are generally cost-effective and are efficient.

Explanation:

Fossil fuels are non-renewable energy that cannot be replenished. Although many people know how harmful using them can be to the environment, still, people continue to buy cars that are powered by it. This is because, using fossil-fueled cars can help you save money compared to using replacement-fueled cars. Its engines are also more powerful, which means they can arrive at their destination in just a few minutes. This makes it efficient. The cost of maintaining a fossil-fueled car is less expensive compared to replacement-fueled cars. People are naturally keen when it comes to budgeting, thus, many people still buy cars powered by fossil fuels.

Answer:

All planets have an elliptical orbit

all planets have roughly the same SHAPE of orbit

The magnitude of the force exerted by the elbow is F e = 81.8 N.

Given data, w1 = m1 g = (1.20kg) (9.81 m/s^2)

w1 = 11.77 N

w2 = m2 g = (0.700kg) ( 9.81 m/s^2)

w2 = 6.867 N

d b = 0.0350 m

d2 = 0.310 m = d1 = d2/2 = 0.155 m

if we assume that the forearm remains momentarily i the horizontal position then the sum of moments at point E (elbow) must be equal to zero.

∑ M e = 0

F b = (d1) w1 + (d2) w2 / d b

= (0.155) (11.77) + (0.310) (6.867) / 0.0350

= 112.94 N

the magnitude of the force exerted by the biceps is F b = 112.94 N

on the other hand, the magnitude of force that the elbow applies on the forearm, we will determine from Newtons second law.

∑ F y = F b - F e y - w1 - w2 = 0

= 112.94 N - 11.77 N - 6.867 N

= 94.303 N

∑ F x = 0

F e x = 0

So, F e = √F e x ^2 + F e y ^2

= √0^2 + (94.303)^2

= 81.8 N

the magnitude of the force exerted by the elbow is F e = 81.8 N.

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Answer:

Energy = 51840 J = 51.84 KJ

Explanation:

The electrical energy delivered to the toy can be found out by the following formula:

\(Energy = (Power)(time)\\Energy = (VI)(t)\\Enegry = VIt\\\)

where,

V = Voltage = 3 V

R = Resistance = 2.5 Ω

I = Current = V/R (Ohm's Law) = 3 V/2.5 Ω = 1.2 A

t = time = (4 h)(3600 s/1 h) =  14400 s

Therefore,

\(Energy = (3\ V)(1.2\ A)(14400\ s)\\\)

Energy = 51840 J = 51.84 KJ

The present value of the following single amounts are as follows;

PV for FV = $20,000, I =7%, N =10 years is $10,155.84

PV for FV = $14,000, I =8%, N =12 years is $4,489.92

PV for FV = $25,000, I =12%, N =20 years is $2,590.11

PV for FV = $40,000, I =10%, N =8 years is $18,520.89.

Future value (FV) =$20,000,

Interest rate (I) =7%,Time (n) = 10 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 20000 / (1 + 0.07)10PV = 20000 / 1.96715PV = $10,155.84

Future value (FV) =$14,000,

Interest rate (I) =8%,

Time (n) = 12 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 14000 / (1 + 0.08)12PV = 14000 / 3.12159PV = $4,489.92

Future value (FV) =$25,000,

Interest rate (I) =12%,Time (n) = 20 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 25000 / (1 + 0.12)20PV = 25000 / 9.64632PV = $2,590.11

Future value (FV) =$40,000,Interest rate (I) =10%,Time (n) = 8 years

The present value (PV) can be calculated as follows;

PV = FV / (1 + i)n = 40000 / (1 + 0.1)8PV = 40000 / 2.15893PV = $18,520.89

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Answer:

/////////////////////////////////////////////////

Explanation:

A particle in uniform circular motion requires a net force acting towards the center of the circle. So option A is correct.

The net force acting on a particle moving in a circular path is always directed towards the center of the circle. The motion of a particle in a circular path is characterized by the direction of its velocity and acceleration at each instant in time. These two vectors are always perpendicular to each other.The magnitude of the net force required to keep a particle in uniform circular motion depends on the mass of the particle and its velocity, as well as the radius of the circular path it is following. This force is referred to as the centripetal force and is always directed towards the center of the circle.The centripetal force is provided by some other object, such as a string or a gravitational field, which acts to pull the particle towards the center of the circle. Without this force, the particle would continue to move in a straight line tangent to the circle, rather than in a circular path.Therefore option A is correct.

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Answer:

Explanation:

Meters per second

Answer:

m/s (meters per second)

Explanation:

Answer :

The answer is clearly C

Explanation:

Because the only way currents move are to the side

Hi there!

Question 1:

We know that Impulse = Δp = mΔv, so:

I = 0.045(70) = 3.15 Ns

I = F · t, so:

3.15/0.1 = F

F = 31.5 N

Question 2.

We can find the impulse using:

I = Ft

I = 300 · 0.04 = 12 Ns

Find the change in velocity using:

I = mΔv

12/0.13 = Δv = 92.31 m/s

“The electric flux through a closed surface is equal to the net charge inside the surface divided by the physical constant. This law is a fundamental principle in electrostatics and is expressed mathematically as E.ds = Q/ε0.

Gauss’s Law for electric fields is a fundamental principle in physics, specifically in the study of electrostatics. The law describes the relationship between the electric flux and the distribution of electric charges in a given space. Simply put, it states that the electric flux through a closed surface is proportional to the total amount of electric charges inside the surface. In mathematical terms, the statement of Gauss’s Law for electric fields is as follows: E.ds = Q/ε0Here, E.ds represents the electric flux through a closed surface, Q represents the total electric charge enclosed within the surface, and ε0 is the physical constant known as the permittivity of free space. This equation can be used to calculate the electric field created by a given charge distribution, provided that the electric flux through a closed surface around the distribution is known.

Gauss’s Law for electric fields states that the electric flux through a closed surface is proportional to the net electric charge enclosed within the surface. This law is a fundamental principle in electrostatics and is expressed mathematically as E.ds = Q/ε0.

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Answer:

9m^3

Explanation:

Given data

volume  v1=  3m^3

volume  v2=  ???

Temperature T1= 20.0°C.

Temperature T2= 60.0°C.

Applying the relation for temperature and volume

V1/T1= V2/T2

substitute

3/20= V2/60

3*60= V2*20

180= 20*V2

180/20= V2

V2= 9m^3

Hence the final volume is 9m^3

Answer: It prevents us from seeing most of the galactic disk with visible and ultraviolet light.

(hope this helps) :)

Answer:b

Explanation:

velocity of a falling object increases.

so Kinetic energy of a falling object increases

height of a falling object from the ground decreases.

so the potential energy of a falling object decreases

The magnitude of the force that the object exerts on the child is 100 N.

option C is the correct answer.

Newton's third law of motion states that for every action there is an equal and opposite reaction. In other words, action and reaction are equal and opposite.

Mathematically, Newton's third is given as;

Fa = Fb

where;

If the child exerts 100 N force on the object, the reaction of the object or the upward force exerted on the child by the object is 100 N in opposite direction.

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Answer:

See attachment and below

Explanation:

A car accelerates from 10m/s to 22m/s in 10 seconds.

a = (22m/s - 10m/s)/10sec

a = 12m/s/10s

a = 1.2 m/s^2

A skydiver falls from an airplane and achieves a speed of 98m/s after 10 seconds. the starting speed is 0m/s

a = 98m/s - 0m/s)/10sec

a = 9.8 m/s^2

9.8 meters/sec^2 is the acceleration due to gravity.

The final speeds of the spheres are 3.47 m/s and 3.08 m/s.

We can use conservation of momentum to solve this problem since there are no external forces acting on the system.

The initial momentum of the system is:

p_initial = m₁ * v₁ + m₂ * v₂

where m₁ and m₂ are the masses of the spheres, and v₁ and v₂ are their initial velocities (4.00 m/s and 0 m/s, respectively).

After the collision, the momentum of the system is:

p_final = m₁ * v1' + m₂ * v₂'

where v₁' and v₂' are the final velocities of the spheres. We also know that the angle between the first sphere's final path and its initial path is 60 degrees, which means that the angle between the two spheres after the collision is 150 degrees (90 + 60).

Using conservation of momentum, we can set the initial and final momenta equal to each other:

m₁ * v₁ + m₂ * v₂ = m₁ * v₁' + m₂ * v₂'

We can also break down the final velocities into their x and y components using trigonometry. Let's define the angle between the first sphere's final path and the x-axis as theta. Now we can use conservation of momentum to solve for the final velocities:

m₁ * v₁ + m₂ * v₂ = m₁ * v₁' * cos(theta) + m₂ * v₂' * cos(150 degrees)

0 = m₁ * v₁' * sin(theta) + m₂ * v₂' * sin(150 degrees)

Solving the first equation for v₂', we get:

v₂' = (m₁ * v₁ + m₂ * v₂ - m₁ * v₁' * cos(theta)) / (m₂ * cos(150 degrees))

Substituting this expression into the second equation and solving for v₁', we get:

v₁' = (m₂ * sin(150 degrees) * v₁ + m₂ * sin(150 degrees) * v₂ + m₁ * sin(theta) * v₁' - m₁ * sin(theta) * m₂ * v₁ * cos(theta) / cos(150 degrees)) / (m₁ * sin(theta))

Plugging in the given values and solving, we get:

v₁' = 3.47 m/s

v₂' = 3.08 m/s

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For instance, a 20.0 a light bulb requiring 220 voltages AC will have a resistance of 144 ohms and consume 0.833 Amps.

It is true that using an electric oven raises your electricity costs significantly. To achieve the ideal temperature for baking, this large kitchen equipment uses an average of from 2000 to 3000 volts, or 2 to 3 kw per hour.

Furnaces  are one of the most fuel appliances in your home, despite not being the most frequently used. In fact, your oven probably uses the most energy of any appliance in your kitchen, aside than your refrigerator which runs constantly.

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Since work is defined as the product of force and displacement, the work performed in moving from A to B is 15 J, and the work done in going from B to A is -15 J.

In physics, work is a measure of the energy transferred when a force acts on an object and causes it to move through a distance. Work is defined as the product of the force applied to an object and the distance through which that force acts. Mathematically, work is given by the formula:

W = F x d x cosΘ

where W is work, F is the force applied, d is the displacement of the object, and theta is the angle between the force and the displacement vectors. The unit of work is the joule (J), which is defined as the work done when a force of 1 newton (N) acts on an object to move it through a distance of 1 meter (m).

If the force is applied in the same direction as the displacement, then the angle theta is 0 degrees and cosΘ is equal to 1, so the formula for work simplifies to:

W = F x d

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In a car accident, a seat belt helps prevent injuries by applying a force greater than the force of the moving car.

An influence that can alter an object's motion is referred to as a force in physics. An object with mass can change its velocity, or acceleration, in response to a force by moving away from rest, for example. Intuitively, pushing or pulling can be used to describe force. As a vector quantity, a force is one that has both magnitude and direction. It is expressed as a newton in the SI system (N). F is a symbol that stands for force (formerly P).

The net force exerted on an object is equal to the rate at which its momentum varies over time, according to the original formulation of Newton's second law. This law suggests that the acceleration of an object is constant if its mass is constant.

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The gravitational force exerted by one peach on the other can be calculated using the formula F = G(m1m2)/r²,

where F is the force, G is the gravitational constant (6.67 x 10^-11 Nm²/kg²), m1 and m2 are the masses of the two peaches, and r is the distance between their centers of mass.

(a) When the separation between the peaches is 0.25 m, the force exerted by one peach on the other is:

F = (6.67 x 10⁻¹¹ N×m²/kg²) × (0.16 kg × 0.16 kg) / (0.25 m)² = 1.07 x 10⁻⁹N

(b) When the separation between the peaches is 0.50 m, the force exerted by one peach on the other is:

F = (6.67 x 10^-11 N×m²/kg²) ×(0.16 kg × 0.16 kg) / (0.50 m)²= 2.67 x 10⁻¹⁰ N

Therefore, the gravitational force exerted by one peach on the other decreases as the distance between them increases. This is because the force of gravity is an inverse square law, meaning that the force decreases proportionally to the square of the distance between the objects.

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Answer:

voyager 2

Answer: According to Neil Degrease Tyson in his text "To Fly" the biggest achievement of human flight is the voyager 2. Explanation: The reasons behind this are that Tyson explains very well that not the first airplane, helicopter, or space rocket were the biggest achievements

Explanation:

a. The acceleration of the object is calculated to be 6.36 m/s².

b. During the first 11 seconds, the object travels 385 m.  

c. The average velocity of the object during the first 11 seconds is 70 m/s.

d. The final velocity is 31.8 m/s.

e. The object's displacement at this time is 79.5 m.

Speed of the object = 70 m/s  

Time = 11 sec

The acceleration of the object is described to be the rate of change of speed.

So, acceleration = 70/11= 6.36 m/s²

From the equations of motion, we know, s = ut + 1/2 a t²

As, u = 0 here, s = 1/2 a t²

s = 1/2 (70/11) 11² = 385 m

The following formula is used to determine the object's initial displacement,

s₀ = ut

s₀ = 0

After the first 11 seconds, the object's displacement is determined as follows,

s₁ = v t

s₁ = 70 × 11 = 770 m

The object's average velocity is computed as follows:

v = (s₁ - s₀)/t = (770-0)/11 = 70 m/s

Hence, the average velocity of the object is 70 m/s.

Relation between initial, final velocity, acceleration is

v = u + a t

v = 0 + 6.36 × 5 = 31.8 m/s

To find displacement, let us use the equation, v² - u² = 2 a s

Making s as subject, we have, s = (v² - u²)/2 a = (31.8² - 0)/(2 × 6.36) = 79.5 m

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Answer:

The correct option is;

B. Subtract vectors A from C; \(F_{Net}\) = 12 N

Explanation:

The given parameters are;

The weight of the dresser = 250 N

The force applied by the man = 20 N = C

The frictional force provided by the carpet = 8 N = The component of the weight resisting motion = A

Therefore, the net force tending to put the dresser in motion, \(F_{Net}\), is given as follows;

\(F_{Net}\) = The force applied by the man, C - The frictional force provided by the carpet which is the component of the weight resisting motion, A

\(F_{Net}\) = C - A = 20 N - 8 N = 12 N

\(F_{Net}\) = 12 N

The resulting net force, \(F_{Net}\) = 12 N.

The resultant force can be obtained by subtracting vector C from Vector A and the value of net force is 12 N. Hence, option (C) is correct.

Given data:

The weight of man is, W = 250 N.

The magnitude of applied force is, F = 20 N.

The magnitude of frictional force is, f = 8 N.

As per the given problem and the diagram let the applied force be denoted by vector A, Then,

Magnitude of Vector A = 20 N

And the frictional force be denoted by vector C. Then,

Magnitude of Vector C = 8 N

We know that the role of frictional force is to oppose the motion or to oppose the effect of applied force. Then the resultant force is given as,

\(F_{net} = F-f\\\\F_{net} = 20 - 8\\\\F_{net} = 12 \;\rm N\)

Thus, we can conclude that the resultant force can be obtained by subtracting vector C from Vector A and the value of net force is 12 N. Hence, option (C) is correct.

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His final velocity at the end of the 2.6 seconds will be  25.48 m/s

given

time = 2.6 seconds

initial velocity = u = 0

acceleration = acceleration due to gravity = 9.8 \(m/s^{2}\)  (since , it is a free fall )

final velocity = ?

using kinematics equation

v = u + at

v = u - g*t

v = - 9.8 * 2.6 = - 25.48 m/s

His final velocity at the end of the 2.6 seconds will be  25.48 m/s in downward direction

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The length of the pendulum is 3.3 m.

The given parameters:

P.E = K.E

mgh = ¹/₂mv²

gh = ¹/₂v²

g(L - Lcosθ) = ¹/₂v²

gL(1 - cosθ) = ¹/₂v²

\(L = \frac{v^2}{2g(1- cos\theta)} \\\\L = \frac{(3.4)^2}{2\times 9.8(1 - cos35)} \\\\L = 3.28 \ m\\\\L = 3.3 \ m\)

Thus, the length of the pendulum is 3.3 m.

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Answer:

Red Volcano Rock and the Lava Rock Covered in Sulphur

Explanation:

Igneous Rocks are formed by volcanoes, lava, and magna. Sandstone is sedimentary and Slate is metamorphic. The other two are literally formed by volcanoes.

Answer:

Red Volcano Rock and the Lava Rock Covered in Sulphur

Explanation:

Answer:

33 hours or equivalently: 1980 minutes

Explanation:

Use the formula for movement under constant velocity, as the velocity equal the distance traveled divided by the time it took, and solve for the unknown time (t):

\(v=\frac{distance}{t} \\t=\frac{distance}{v} \\t=\frac{8.25\,\,km}{0.5 \,\,km/h} \\t = 33 \,\,h\)

which can also be given in minutes as : 33 x 60 = 1980 minutes