If the gas in a container absorbs 275 Joules of heat, has 125 Joules of work done on it, then does 50 Joules of work, what is th
1 answer:
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Answer:
Explanation:
Mass of the cable car, m = 5800 kg
It goes 260 m up a hill, along a slope of
Therefore vertical elevation of the car =
Now, when you get into the cable car, it's velocity is zero, that is, initial kinetic energy is zero (since K.E. = ). Similarly as the car reaches the top, it halts and hence final kinetic energy is zero.
Therefore the only possible change in the cable car system is the change in it's gravitational potential energy.
Hence, total change in energy = mgh =
where, g = acceleration due to gravity
h = height/vertical elevation
Answer:
(a). The magnitude and direction of the velocity of the otters after collision is 1.35 m/s toward left.
(b). The mechanical energy dissipates during this play is 226.98 J.
Explanation:
Given that,
Mass of one otter = 8.50 kg
Speed = 6.00 m/s
Mass of other = 5.75 kg
Speed = 5.50 m/s
(a). We need to calculate the magnitude and direction of the velocity of these free-spirited otters right after they collide
Using conservation of momentum
Put the value into the formula
Negative sign shows the direction of motion of the object after collision is toward left.
(b). We need to calculate the initial kinetic energy
Using formula of kinetic energy
Put the value into the formula
We need to calculate the final kinetic energy
Using formula of kinetic energy
Put the value into the formula
We need to calculate the mechanical energy dissipates during this play
Using formula of loss of mechanical energy
Put the value into the formula
Negative sign shows the loss of mechanical energy
Hence, (a). The magnitude and direction of the velocity of the otters after collision is 1.35 m/s toward left.
(b). The mechanical energy dissipates during this play is 226.98 J.