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Dominik [7]
3 years ago
5

A 12 kg mass is lifted to a height of 2 m. What is its potential energy at this position?

Physics
2 answers:
Mademuasel [1]3 years ago
6 0

Answer:

240joules

Explanation:

P:E = MGH

mass 12kg

g is constant as 10m/s²

h is 2m

therefore, 12*10*2 =240joules

Romashka-Z-Leto [24]3 years ago
4 0

Answer:

Explanation:

Potential energy is the energy stored within an object, due to the object's position, arrangement or state

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What affects fuel consumption in automobiles?
maksim [4K]

Answer:

A and C

Explanation:

drag (the area of lower air pressure behind the car when moving) and mostly air resistance (the work to push the air in front of us away to move through - the faster we go, the stronger the air resists to move aside).

4 0
2 years ago
A computational model predicts the maximum kinetic energy a roller coaster car can have given its mass, the speed at the highest
Ymorist [56]

Answer:

D

Explanation:

The decrease in potential energy is equal to the increase in kinetic energy.

mgh

250 x 9.8 x 30

=73, 500

3 0
3 years ago
A 1.0 kg rock moving at 8.4 m/s will have ______ of kinetic energy
BlackZzzverrR [31]
K.E=1/2mv^2 K.E=1/2multiply1multiply8^2=32joules
4 0
3 years ago
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.0
e-lub [12.9K]

Answer:

f = 421.8 Hz

Explanation:

When she moved a distance of 1 m from mid point she observe first destructive interference due to two speakers

so we can say that path difference of sound due to two speakers will be equal to half of the wavelength

so path difference is given as

\Delta L = {3.5^2 + 12^2}^{0.5} - {1.5^2 + 12^2}^{0.5}

so it will be

\Delta L = 12.5 - 12.093

\Delta L = 0.4066

now we know that

\frac{\lambda}{2} = 0.4066

\lambda = 0.813

now frequency of sound is given as

f = \frac{v}{\lambda}

f = \frac{343}{0.813}

f = 421.8 Hz

4 0
3 years ago
Which of the following is a chemical equation that accurately represents what happens when a sulfur and oxygen are produced from
Ksenya-84 [330]
It's c................
5 0
3 years ago
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