A mass of 0.8 kg is fixed at a vertical spring with an unknown spring constant. When spring is released from rest, it extends to
1 answer:
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Answer:
Part c)
Explanation:
Light bulb is marked as 75 W and 120 Volts
so it means that when we apply 120 volts across the bulb then it will consume the total power of 75 W
now when we connected the bulb with the help of conducting wires with some resistance across them then few of its voltage will fall across the wires
due to which the voltage across bulb is less than 120 Volts
So the power given by the bulb is less than 75 W
Part c)
Resistance of the bulb is given as
now total resistance of the circuit
now current in the circuit
so actual power delivered to the bulb is given as
Answer:
Explanation:
Newton's 2nd law is given as .
To find the acceleration in the horizontal direction, you need the horizontal component of the force being applied.
Using trigonometry to find the horizontal component of the force:
Use this horizontal component of the force to solve for for the acceleration of the object:
Answer:
r = 1.44 × m
Explanation:
given data
satellite to revolve = 5 time a day
G = 6.67 × Nm²/kg²
Mass earth = 5.97 × kg
to find out
radius of its orbit
solution
first we get here Time taken for one complete revolution that is
time taken =
time taken = 4.8 hours
time taken = 4.8 hours × 3600 sec
time taken = 17280 sec
and
time is express as
T = 2π × .............1
put hre value we get
17280 = 2π ×
solve it we get
r = 1.44 × m