Electric potential, unlike electric potential energy, is measured in units of _________.
2 answers:
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Answer:
C. The bug's change in momentum is equal to the car's change in momentum.
Explanation:
As we know by Newton's 2nd law
here we have also know that when car hits the bug then force applied by wind shield on the bug is same as the force applied by the bug on the car's wind shield as per Newton's III law
so we know that
so we have
so correct answer will be
C. The bug's change in momentum is equal to the car's change in momentum.
1) Weight of the person: 490 N
2) Maximum torque: 245 Nm
Explanation:
1)
The weight of a body is equal to the gravitational force exerted on the body; it is given by the equation
where
m is the mass of the body
g is the acceleration due to gravity
For the person in this problem,
m = 50 kg is the mass
is the acceleration due to gravity on Earth's surface
Therefore, the weight of the person is
2)
The turning force (also called torque) exerted by a force rotating an object is given by
where
F is the magnitude of the force
d is the length of the arm (the distance between the force and the pivotal point)
is the angle between the direction of the force and the arm
For the spanner in this problem,
F = 490 N is the force applied (the weight of the person)
d = 0.5 m is the arm (the length of the spanner)
The maximum torque is obtained when , therefore it is:
Learn more about weight:
About torque:
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