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tatuchka [14]
2 years ago
14

What happens to the kinetic energy of a snowball as it rolls and gains mass.

Physics
2 answers:
Sauron [17]2 years ago
7 0
Kinetic Energy Increases
Marianna [84]2 years ago
3 0
If it is GAINING mass, the kinetic energy increases because it's still moving. If it stopped, it would then become potential energy.
yw XD
(just answered the same question just different user)
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A 6.9 kg object is suspended by a string from the ceiling of an elevator. The acceleration of gravity is 9.8 m/s 2 . Determine t
lina2011 [118]

Answer:

Tension, T = 87.63  N

Explanation:

Given that,

Mass of the object, m = 6.9 kg

The string is acting in the upward direction, a = 2.9 m/s²

Acceleration due to gravity, g = 9.8 m/s²

As the lift is accelerating upwards, it means the net force acting on it is given by :

T = m(a+g)

= 6.9 (2.9+9.8)

= 6.9(2.7)

= 87.63  N

So, the tension in the string is 87.63  N.

6 0
3 years ago
How is the q of an rlc parallel resonant circuit calculated?
notka56 [123]

Answer:

It is calculated by dividing Resistance, R, by Inductive reactance, XL.

Explanation:

Q is called the Q factor of a resonance circuit. In a parallel resonance circuit, it is calculated by finding the ratio of the power stored in the circuit to the power distributed in the circuit. It is a way of measuring the quality of a circuit or how effective the circuit is.

Q factor is the inverse in the resonance series circuit.

Q factor of a resonance parallel circuit,

<h3>Q = R/XL</h3>

R = Resistance

XL = Inductive reactance

3 0
3 years ago
Calculate the total rotational kinetic energy of the molecules in 1.00 mol of a diatomic gas at 300 K.
AURORKA [14]

Answer:

= 2.49 × 10³J

Explanation:

Total rotational kinetic energy K = nRT

R = 8.134 J/mol.K

n = 1 mol

T = 300 K

K  = 1 × 8.314 × 300

=  2.49 × 10³J

6 0
3 years ago
You visit the Grand Canyon on a particularly hot day, and like all good tourists, you yell "Hello!". Would you expect to hear th
RUDIKE [14]

Answer:

Hear echo sooner on a hot day than on a cooler day.

Explanation:

Temperature is one of the factors that determine the speed of sound. Speed of sound, which in this case is echo is calculated considering distance and time. Speed of sound is directly proportional to the temperature , therefore, when the temperature is hot, the speed of sound is faster than when the temperature is cold and vice versa. In conclusion, you would expect to hear the echo “hello” sooner on a hot day compared to a cold day provided all the other factors are kept constant.

7 0
3 years ago
A car uses 2500 joules in 25 seconds. find power
irina1246 [14]

Answer:

100 W

Explanation:

The power can be defined as energy change / time taken

Or

Energy used/time taken

So in this case you get,

Power = 2500/25 = 100 W

7 0
3 years ago
Read 2 more answers
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