Weight in air(N)=1.2 apparent weight (N)=1.0 what is the buoyant force (N)

Answer:

OPEN, INTERRUPTION,  CLOSED

Explanation:

In this exercise, you are asked to complete the expression with the correct words.

Let's resist an important concept when a circuit has a path leaving a point and can return to the same point, it is said that the circuit is closed and current can circulate.

Now let's complete the expression is

The bulb is not on because the switch is__OPEN_

and there is a_INTERRUPTION___in the circuit.

The bulb will come on if you_CLOSED__

Answer:

Answer is 331.5 m/s

Explanation:

This is done by using the equation wave speed = wavelength x frequency.

On a day when the wavelength of a 1500 Hz frequency is 0.221 meters, the speed of sound is about 331.5 meters per second.

The air's humidity, pressure, and temperature all affect how quickly sound travels through it. To get the sound speed in air, use the following formula:

v = f * λ

where the sound wave's wavelength, frequency, and speed are represented by the letters v, f, and.

Frequency times wavelength equals sound speed.

We may enter these numbers into the formula: where the wavelength is 0.221 m and the frequency is 1500 Hz.

Speed of sound = 1500 Hz x 0.221 m

Speed of sound = 331.5 m/s.

Therefore, the speed of sound on the given day is approximately 331.5 meters per second.

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Answer:

1 ms-²

Explanation:

v = u + at

25 = 15 + a× 10

a= 1ms-²

There is little chance that additional forces could be simply translated into spacetime in the same manner that gravity is.

The general relativity theory proposes that gravity is the bending of spacetime brought on by the existence of mass and energy. This theory describes gravity.

The strong nuclear force, the weak nuclear force, and other basic forces are all explained by various theories that do not use the idea of spacetime curvature in the same manner that general relativity does.

The basic forces are mediated through objects referred to as bosons in quantum mechanics, which explains how small-scale particles behave. Every force has a certain sort of boson attached to it, and depending on how these bosons interact with other particles, the forces exhibit various behaviours.

It is still totally speculative to say that other basic forces may be construed as properties of spacetime in a unified theory of physics at this time. It is also important to keep in mind that the idea of spacetime is specific to relativity and cannot be used in other branches of physics.

There is therefore little chance that additional forces could be simply translated into spacetime in the same manner that gravity is.

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7200 joules of heat and light energy was dissipated into the air. But no work was done ... no force moved through no distance.

If an electron vibrates back and forth in an clean wire with a frequency of 60.0 Hz, then it will make 2.2×10⁵ cycles. in 1.0 h. Hence option D is correct.

Electric charge is the physical property of matter that experiences force when it is placed in electric field. F = qE where q is amount of charge, E = electric field and F = is force experienced by the charge. there are two types of charges, positive charge and negative charge which are generally carried by proton and electron resp. like charges repel each other and unlike charges attract each other. the flow charges is called as current. Elementary charge is amount of charge a electron is having, whose value is 1.602 x 10⁻¹⁹ C

Amplitude is a measure of loudness of a sound wave. More amplitude means more loud is the sound wave.

Wavelength is the distance between two points on the wave which are in same phase. Phase is the position of a wave at a point at time t on a waveform. There are two types of the wave longitudinal wave and transverse wave.

Frequency is nothing but the number of oscillation in a unit time.

Given,

frequency f = 60.0 Hz.

time t = 1.0 h = 60*60 = 3600s

F = number of cycles/time

number of cycles = F×time

The number of cycles in 1 Hr is

60*3600 = 2.2×10⁵ cycles.

Hence option D is correct.

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Answer:

Explanation:

Using the formula for heart capacity;

Q = mcΔt

m is the mass = 150g = 0.15kg

initial temperature = 22°C

Quantity of heat = 3240J = 3.24kJ

specific heat capacity of ethanol = 2.57 [kJ/kg K]

Substitute and get the final temperature

3.240 = 0.15(2.57)(T - 22)

3.240 = 0.3855(T-22)

3.240/0.3855 = T - 22

8.405 = T - 22

T = 22+8.405

T = 30.405°C

Hence the final temperature of the ethanol if 3240 J was needed to raise the temperature of the ethanol is 30.405°C

The momentum of the bowling ball at the point where it reaches a speed of 3.6 m/s is 22.3 Kg.m/s (Option C)

Momentum is defined as the product of mass and velocity. It is represented mathematically as:

Momentum = mass × velocity

Now, we can obtain the momentum of the bowling ball at the point where it reaches a speed of 3.6 m/s. Details below:

Momentum = mass × velocity

Momentum =  6.2 × 3.6

Momentum = 22.3 Kg.m/s

Thus, the momentum at the point is 22.3 Kg.m/s (Option C)

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Answer:

9m

Explanation:

Given parameters:

Volume of the water  = 5liters;

 Since density = 1g/cm³  

         1L  = 1000cm³  

         5L  = 5000cm³

  So;

            mass  = density x volume  = 1 x 5000 = 5000g ; 5kg

Work done  = 450J

Acceleration due to gravity  = 10m/s²

Unknown:

Depth of the well  = ?

Solution:

To solve this problem;

 Work done  = mass x gravity x depth

 450 = 5 x 10 x depth

   depth  = 9m

Answer:

90

Explanation:

cause

Weight/mass = gravitational field strength is the formula. The gravitational fields of other planets differ in strength.

When an object goes on a circular path at a constant speed, its magnitude of velocity remains constant. Only its orientation is always changing. As a result, it is classified as evenly accelerated motion.

Uniform linear motion is defined as traveling along a straight line at the same velocity. The magnitude or direction of the velocity varies in uniform circular motion, whereas magnitude and direction remain constant in uniform linear motion.

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Answer: measurement

Answer:

An article written by a scientist .

Explanation:

Primary sources information are those that contain first  hand information probably from the place of the activities or by the original contact of the information (source ) .

So primary information is normally contained in artifact , journals , letter , dissertations manuscripts  , videos and audio recordings .

The fact that the article is written by the scientist means he is the one who has the original information hence he is the first person to access the information , meaning he is the original owner .

Answer:

See explanation

Explanation:

Given that;

q1 and q2 are the magnitudes of the two charges while r1 is the distance between the charges.

F1 =kq1q2/r1^2

Then,

F2 = kq1q2/(2r1)^2

F2 = kq1q2/4r1^2

So,

F2 = 1/4 F1

The force between the charges changes by a factor of 1/4.

The velocity of the wave having a frequency of 458 Hz and a wavelength of 0.74 m is 338.92 m/s

The velocity of a wave is related to its frequency and wavelength according to the following equation:

Velocity (v) = wavelength (λ) × frequency (f)

v = λf

v = λf

v = 0.74 × 458

v = 338.92 m/s

Thus, the velocity of the wave is 338.92 m/s

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Answer:

cant see to find the answer sorry :( i tried :( good luck !! you'll do great <3333 BEST OF LUCK :DDDD

Explanation:

Answer:

B. The larger force causes more acceleration than the smaller.

Explanation:

For example, let me use a child and a grown up. The child represents the smaller force while the grown up represents the larger force. If they are pushing the same object of different sides, obviously the side with the grown up will push and move to the side of the child because it is stronger.

Answer:

K.E = 1.13 × 10^5 J

When compared to;

K.E = a.bc X 10^d J

We can observe that;

a = 1

b = 1

c = 3

d = 5

Explanation:

Given;

Mass of rhinoceros m = 1000kg

Velocity v = 15m/s

The kinetic energy of the body at this speed is;

K.E = 0.5×mv^2 ........1

Substituting the values of m and v into equation 1;

K.E = 0.5×1000×15^2

K.E = 112500 J

K.E = 1.13 × 10^5 J

When compared to;

K.E = a.bc X 10^d J

We can observe that;

a = 1

b = 1

c = 3

d = 5

This is because your basal metabolic rate, or BMR, decreases as you age.

Your body burns calories at rest to maintain essential bodily processes like breathing, circulation and cell growth and repair which is referred to as BMR.

Age-related changes in body composition including an increase in body fat and a loss of muscular mass can result in a reduction in BMR.

Therefore, To maintain a healthy weight and overall health as you age, it is crucial to pay attention to your food and physical activity levels. Maintaining a healthy BMR and avoiding weight gain can be achieved by eating a well-balanced diet with sensible portion sizes and exercising frequently.

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Answer:

I believe that it's C

Explanation:

Answer:

ii) Insulating materials that gain electrons when rubbed become negatively charged. c) An electric current is a flow of charge. d) An isolated metal object that is initially uncharged will gain charge if it is brought into contact with a charged object. e) A metal object is earthed by connecting it to the ground.

Explanation:

hope this helps you :)

Answer:

25 minutes

Explanation:

The total current in a circuit with a voltage of 120 volts across five parallel resistors (5, 14, 21, 25, and 100 ohms) is 25.56 Amperes.

To calculate the total current in the circuit, follow these steps:
1. Find the total resistance (R_total) for the parallel resistors using the formula:
1/R_total = 1/R1 + 1/R2 + 1/R3 + 1/R4 + 1/R5
1/R_total = 1/5 + 1/14 + 1/21 + 1/25 + 1/100
1/R_total ≈ 0.2 + 0.0714 + 0.0476 + 0.04 + 0.01
1/R_total ≈ 0.369
R_total ≈ 2.71 ohms
2. Use Ohm's Law to calculate the total current (I_total):
I_total = V_total / R_total
I_total = 120 volts / 2.71 ohms
I_total ≈ 25.56 Amperes
So, the total current in the circuit is approximately 25.56 Amperes.

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Answer:

6m/s

Explanation:

In Fahrenheit, 35.5 degrees Celsius is equivalent to 127.9 degrees.

Use the formula below for the convert 35.5 degrees Celsius to Fahrenheit:

°F = (°C x 1.8) + 32

The process of translating a temperature from one scale to another is referred to as temperature conversion. Temperature conversions between the several regularly used temperature scales, including Celsius, Fahrenheit, and Kelvin, are frequently required.

where the temperature is expressed in degrees Fahrenheit (°F) and degrees Celsius (°C).

Plugging in 35.5 degrees Celsius yields the following results:

°F = (35.5 x 1.8) + 32 °F

=> 95.9 + 32 °F

=> 127.9

As a result, 35.5 Celsius is equivalent to 127.9 Fahrenheit.

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In this case, nothing can travel faster than the speed of light. Therefore, it is impossible for Ben or any other object with mass to reach the speed of light, let alone exceed it.

In addition, time dilation occurs when an object approaches the speed of light, meaning that time appears to slow down for the object relative to an outside observer. This effect becomes more significant as the object approaches the speed of light.

So, in this scenario, as Ben approaches the speed of light, time would appear to slow down for him relative to the spectators in the stands. From Ben's perspective, the laser beam of light would appear to be traveling away from him at the speed of light, just as it always does. However, from the perspective of the spectators in the stands, Ben would appear to be moving in slow motion, with his movements and reactions appearing to be greatly slowed down.

Therefore, according to the spectators watching in the stands, they would see Ben moving in slow motion, while the laser beam of light would continue to move away from him at the speed of light.

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HIV-1 and HIV-2 are both types of human immunodeficiency virus, but they differ in their genetic makeup and the way they are transmitted.

HIV-1 is the most common type of HIV worldwide and is responsible for the majority of HIV infections globally.

HIV-2 is primarily found in West Africa and is less easily transmitted than HIV-1.

HIV-2 infection progresses more slowly to AIDS compared to HIV-1 infection, and people with HIV-2 are less likely to transmit the virus to others.

There is no cure for either HIV-1 or HIV-2, but antiretroviral therapy can effectively control the virus and prevent the progression to AIDS.

HIV-1 and HIV-2 are both transmitted through sexual contact, sharing of needles, and from mother to child during pregnancy, childbirth, or breastfeeding.

HIV-1 has more subtypes than HIV-2, with subtype B being the most common subtype in the Americas and Europe.

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Answer:   A

Explanation:

:)

The center is being accelerated centripetally. When the youngster is positioned halfway between the top and bottom of the seat, 431.64 N of force is applied to the child.

The body is in a circular motion when the centripetal acceleration occurs; the acceleration is in the direction of the circle's center. The formula is used to calculate it.

The simple act of bicycling provides an illustration of the amount of force. It is a straightforward device that changes the energy a person supplies into kinetic energy. Energy is created as a result of the force applied to the pedal. It takes effort to convert this potential energy into kinetic energy, which propels the bicycle forward.

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