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oee [108]
3 years ago
15

he calculation of kinetic energy uses the formula, KE = 1 2 mv2. Identify the unit that is required for mass and velocity, respe

ctively, to determine the kinetic energy in Joules.
Physics
1 answer:
Umnica [9.8K]3 years ago
5 0
Mass is measured in kg
Velocity is measured in ms^-1
Hope this is what you were looking for
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explain how electrically neutral objects can become electrically charged even though charge cannot be created or destroyed
GaryK [48]

Answer:

The object gains or loses electrons to become charged. Both are a movement of electrons from the negative to the positive charge. A circuit has a continuous current provided by a voltage source.

Explanation:

7 0
3 years ago
Two objects are dropped from different heights at the same instant. If the first object takes 10.7 seconds to hit the ground and
Lubov Fominskaja [6]

Answer:

The answer to your question is : 521.8 m

Explanation:

Data:

Different heights

Time first object (tfo) = 10.7 s

Time second object (tso)= 14.8 s

Initial speed of both objects(vo) = 0 m/s

a = 9.81 m/s²

Formula:

h = vot + 1/2 (a)(t)² but vo = 0    so, h = 1/2 (a)(t)²

Then, height fo      h = 1/2 (9.81)(10.7)² = 561.6 m

          height so     h = 1/2(9,81)(14.8)² = 1074.4 m

Difference in their heights =  1074.4 m - 561.6 m = 521.8 m

5 0
3 years ago
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sashaice [31]
I forgot the answer
4 0
3 years ago
This engineer invented the iron wire to replace hemp rope.
IceJOKER [234]
The answer is A John Roebling.
7 0
4 years ago
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A 1,155 kg truck has a velocity of 18 m/s. What is the momentum of the truck?
77julia77 [94]

The momentum of truck is 20790 kg m/s

<em><u>Solution:</u></em>

Given that we have to find the momentum of truck

From given, 1155 kg truck has a velocity of 18 m/s

Therefore,

Mass = 1155 kg

Velocity = 18 m/s

<em><u>The momentum is given by formula:</u></em>

p = m \times v

Where, m is mass in kg and v is velocity in m/s

Substituting the values we get,

p = 1155 \times 18\\\\p = 20790

Thus momentum of truck is 20790 kg m/s

8 0
3 years ago
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