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murzikaleks [220]
4 years ago
11

Calculate Gravitational Potential Energy for an object on Earth with a mass of 2 kg and a height of 7 m.

Physics
1 answer:
victus00 [196]4 years ago
4 0

Answer:

137.2J

Explanation:

Ep= mgh

Given,

  • m=2kg
  • h=7m

and we know, g = 9.81 N/kg

Ep= 2 × 9.81 × 7

Ep= 137.2J

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Sunny_sXe [5.5K]
I need to force in order to answer. What is it
3 0
3 years ago
If a wave’s frequency is 16Hz and it’s wavelength is 10m. What’s the waves speed?
Vesna [10]

Answer:

160J

Explanation:

Given parameters:

Frequency  = 16Hz

Wavelength = 10m

Unknown:

Waves speed  = ?

Solution:

Waves speed is the product of frequency and wavelength;

  Waves speed  = fλ

f is the frequency

λ is the wavelength

Now insert the parameters and solve;

     Waves speed = 16 x 10  = 160J

4 0
3 years ago
A cat accelerates from rest to 10m/s when it sees a dog. This takes 2 seconds. What was the acceleration of the cat
Nookie1986 [14]
The formula is a= chance in velocity/time
A=10-0/2
A=10/2
A=5 m/s^2 (meters per second squared)
5 0
3 years ago
Read 2 more answers
9.
julsineya [31]
I don’t know just needed points im sorry
8 0
3 years ago
Can someone help me out?
Sphinxa [80]

Answer:

1) The car is slowing down

2) A = 40N forward & B = 25N up

Explanation:

Whenever you're dealing with forces on moving objects, it is important to look at each of the numbers and the directions they're going in.

With the racecar, we see it has four forces on it, 2,000 N up and down, 8,000 back, and 6,000 N forward. Now, each of these forces are going in their respective directions, but they are most in comparison with the force going in the opposite direction (vertical axis, horizontal axis). The two 2,000 N forces will cancel each other out since there is an equal force in both directions, causing a net force of <u>0 N on the vertical axis</u>. This is because the car is most likely moving on a flat surface. As for the horizontal axis, we simply subtract 6,000 & 8,000 to get a net force of <u>-2,000 N in the backwards direction</u>, telling us that the car is slowing down.

As for the boxes, we see the same vertical and horizontal axes, but separated to each box. Box A has a net force of <u>40 N in the forward direction</u> and Box B has a net force of <u>25 N in the upward direction</u>.

4 0
3 years ago
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