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3 years ago

Why does an object above the ground have P.E.?

Physics

2 answers:

Advocard [28]3 years ago

6 0

This doesn't make sense

Sunny_sXe [5.5K]3 years ago

6 0

Because potential energy has emphasis on potential, if the object is above ground it has a potential to fall or move. Therefore presenting energy within its movement.

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What does resonance result in?

marin [14]

“The vibrations of the aluminum force the air Column inside of the rod to vibrate at its natural frequency. The match between the vibrations of the air column and one of the natural frequencies of the singing rod causes resonance.”

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3 years ago

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The Starship Enterprise is caught in a time warp and Spock is forced to use the primitive techniques of the 20th century to dete

Goryan [66]

Answer:c=0.213 J/g/K

Explanation:

Given

sample mass $(m_s)=120 gm$

initial temperature of mineral $(T_{im})=92.6$

mass of water $(m_w)=82.9$

Water initial temperature $(T_{iw})=20$

Heat capacity of calorimeter =15.3 J/k

Final Temperature is 24.8

let c be the specific heat of mineral

Heat released by mineral sample=heat absorbed by calorimeter and water

$120\times c\times (92.6-24.8)=82.9\times 4.184\times (24.8-20)+15.3\times (24.8-20)$

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3 0

3 years ago

You drive your car from home at an

kondaur [170]

Answer:

60 km/h

Explanation:

In the first part of the trip, the speed is

v = 80 km/h

while the time interval is

t = 3 h

So, the distance covered is:

d = vt = (80)(3)= 240 km

The problem states that this distance is half distance between home and the destination - so, the total distance between home and the destination is

$D=2d=2(240)=480 km$

The time taken to cover the second part of the trip is 5 h, so the total time taken is

T = 3 h + 5 h = 8 h

Therefore, the average velocity for the entire trip is

$v=\frac{D}{T}=\frac{480}{8}=60 km/h$

3 0

3 years ago

A car driving down the road speeds up to pass bus. While passing changed velocity from 10 m/s to 35 m/s in 5 seconds. What is th

VMariaS [17]

Answer:

The ans is 3

Explanation:

First write the given values and write the formula of acceleration than do velocity - final velocity by time taken is 10-35%5 so, therefore acceleration of car is 3

5 0

3 years ago

(2)

katrin [286]

What if I don’t give you the answer

6 0

2 years ago