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Artist 52 [7]
3 years ago
6

Two Atoms are isotopes of each other if they have the same number of_______ but a different number _________.

Physics
1 answer:
zloy xaker [14]3 years ago
4 0
The correct answer is #4. They have the same number of protons but a different number of neutrons.
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A bicycle has a momentum of 36 kg • m/s and a velocity of 4 m/s. What is the mass of the bicycle? 9 kg 32 kg 40 kg 144 kg
igomit [66]

Answer:

9 kg

Explanation:

Momentum is mass times velocity.

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3 0
3 years ago
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A penny is dropped from the Statue of Liberty
Brrunno [24]

Answer:

a) The velocity is 2.94m/s

b) 0.441

Explanation:

a) Assume gravity is 9.8m/s^2

Use the equation below to solve for the velocity at 0.30 seconds

vf=vi+at,

vf =unknown velocity  vi= initial velocity vi=0m/s  a= 9.8m/s^2 t=0.30seconds

Step 1: Substitute the variables with the knowns

vf=0m/s+(9.8m/s^2)*0.30seconds

Step 2: Solve

vf=2.94m/s

b)

Use the equation below to solve for the displacement at 0.30 seconds

x=vit+\frac{1}{2} at^{2}

Step 1: Substitute the same variables with the knowns

x=\frac{1}{2}*(9.8m/s^2)*(0.30seconds)^{2}

Note that vi*t=0 as vi=0m/s

Step 2: Solve

x=0.441m

5 0
3 years ago
A planet is orbiting a nearby star. Suppose that the star’s gravity increases over time. What effect will this increase most lik
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The planet would stay in the same orbit but start revolving faster.
(Its year would get shorter.)
7 0
4 years ago
Grace drives her car 168 km in 2 hours. What is her average speed in kilometers per hour?
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Answer:

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