Answer:
Electric charge, Q = 55.69 C
Explanation:
It is given that,
Electric current drawn by the compressor, I = 23.7 A
Time taken, t = 2.35 s
We need to find the electric charge passes through the circuit during this period. The definition of electric current is given by total charge divided by total time taken.
Where,
q is the electric charge
q = 55.69 C
So, the electric charge passes through the circuit during this period is 55.69 C. Hence, this is the required solution.
Answer:
210
Explanation:
A ball rolls horizontally off the cliff at a speed of 30 m/s. It takes 7 seconds for the ball to hit the ground. What is the height of the cliff and the horizontal distance traveled by the ball?
S = (1/2)*9.8 m/s^2 * 7^2 = 240.1 m if the ball is very dense so air resistance, and therefore terminal velocity, can be ignored.
S = v * t = 30 m/s * 7 s = 210 m for the horizontal distance, again assuming negligible air resistance.
Answer:
B. Decrease the plane’s speed and height
Explanation:
Decrease in speed of plane:
When the speed of the plane is decreased then initial velocity of the package will be lesser. As a result, final velocity will also be lesser because in this case final velocity depends upon the initial velocity.
Decrease in height:
According to law of conservation of energy:
Loss in potential energy = Gain in Kinetic energy
mgh = ½ mV^2
It means with the decrease in height less potential energy will be converted to kinetic energy. As package has constant mass so it will gain less velocity.
