<span>Correct pairs:
a man jogging in the park --> motion energy (the energy is the kinetic energy of the man, moving with speed v)
a fully charged camera battery --> electric potential energy (the battery is fully charged, so it can deliver electrical energy when the camera is turned on)
a stove burner that’s turned on --> radiant energy (the stove burner emits energy by radiation)
an apple on a tree --> gravitational potential energy (when the apple is on the tree, it has gravitational potential energy equal to U=mgh, where m is the apple's mass and h its height from the ground)
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Answer:
so kinetic energy of the drum is half the kinetic energy of the particle
Explanation:
Here we know that the particle is connected with the drum through a string
So here we can say that velocity of the particle is same as the tangential velocity of the drum as the particle is connected with the string which is wounded on the drum
So here we can say
now kinetic energy of the particle is given as
at the same time the rotational kinetic energy of the drum is given as
so kinetic energy of the drum is half the kinetic energy of the particle
Answer:
B The gravitational force between the ends decreases
Explanation:
Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces.
Answer:
The angle of deflection will be "1.07 × 10⁻⁷°".
Explanation:
The given values are:
Mass of a cow,
m = 1100 kg
Mass of bob,
mb = 1 kg
The total distance between a cow and bob will be,
d = 2 m
Let,
The tension be "t".
The angle with the verticles be "".
Now,
Vertically equating forces
⇒ ...(equation 1)
Horizontally equating forces
⇒ ...(equation 2)
From equation 1 and equation 2, we get
⇒
O putting the estimated values, will be
⇒
⇒
The catalyst lowers the activation energy.