How is velocity of a body in uniform circular motion related to its time period

Answers

Answer 1

Answer: If the radius remains constant, then the speed of an object in uniform
circular motion and its period of revolution are inversely proportional.

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What is the main function of a telescope?It brings scientists closer to distant objects. It magnifies light received from distant objects. It measures the temperature of distant objects. It measures the wavelengths of incoming light rays

When you approach a light source, the wavelength of emitted light appears _____.a. shorter
b. the same
c. longer

Answers

When you approach a light source, or when the light source
approaches you, the wavelength of the light you see is shorter
than the wavelength of the light that's actually emitted by the source.

Similarly, when you approach a sound source, or when the sound
source approaches you, the wavelength of the sound you hear is
shorter than the wavelength of the sound that's actually emitted by
the source.

Answer:

A. shorter

Explanation:

I just took the test.

Imagine that a tank is filled with water. The height of liquid column is 7 meters and the area is 1.5 square meters (m2). What's the force of gravity acting on the column of water?

Answers

-- The volume of water is (1.5 m² x 7 m) = 10.5 m³

   10.5 m³ = 10,500 liters

   Water mass = (10,500 liters) x (1 kg/liter) = 10,500 kg.

-- "Force of gravity on the water"

= Weight of the water = (10,500 kg) x (9.8 m/s²) = 102,900 newtons

-- Pressure on the bottom of the tank =

   (102,900 newtons) / (1.5 m²)

   = 68,600 nt/m² = 68,600 pascal .

your answer is 102,900 N

i just took the test

How will you describe the magnetic field around a current-carrying coil?a.the magnetic field is weakest near and around the coilb)the magnetic field vary directly with the distance from the coilc)the magnetic field is strongest inside the current-carrying coild)the magnetic field lines are closed loops along the loops in the coil

Answers

C) The magnetic field is the strongest inside the current-carrying coil
This is because the magnetic field lines are packed the closest here.

What is the main force that causes a star to turn into a black hole?Temperature
Gravity
Pressure
Nuclear explosions.

Answers

Gravity. When a dying star of sufficient mass is no longer to support nuclear reactions in its core, it loses the pressure in the core that supports the entire star. Since there is now nothing to counter its own gravity, the entire star implodes until it becomes either a neutron star or, if its mass is large enough, a black hole.

Two waves have the following waveforms.Wave A
U
Wave B
Which conclusion can BEST be supported by the illustrations?

Answers

lol i’m in your physical science class what was the answer

Final answer:

Without seeing the specific waveforms for Wave A and Wave B, we cannot draw a conclusive comparison. However, comparing waveforms can give insights into aspects such as frequency, wavelength, amplitude, and phase difference.

Explanation:

Without the actual illustrations of waveforms for Wave A and Wave B, it's not possible to draw a reliable conclusion about these waves. However, generally, by comparing waveforms, we can discern their frequency, wavelength, amplitude, and phase difference. For example, if Wave A has more complete cycles passing a certain point in a given time than Wave B, we can conclude that Wave A has a higher frequency. If wave A has a higher peak than Wave B, we can say that Wave A has a greater amplitude. These are examples of the types of conclusions one could potentially draw from waveforms, but without the specific waveforms for Wave A and Wave B, any conclusion here would be purely hypothetical.

Learn more about Waveforms here:

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A person can jump a maximum horizontal distance (by using a 45◦ projectile angle) of 5 m on Earth. The acceleration of gravity is 9.8 m/s 2 . What would be his maximum range on the Moon, where the free-fall acceleration is g 6 ? Answer in units of m