Answer:
$10.08
Explanation:
There are 24 hours in a day.
Now, if we assume that the refrigerator uses the 200 Watts per hour, thus, in one day, it will consume;
200 x 24 = 4800 watts
Thus, in 30 days, it will consume;
4800 x 30 = 144,000 Watts
Now, 1000 watts = 1KW
Thus,144,000 watts = 144,000/1000 = 144 KW
Now, since the power company charges $0.07 per kWh, thus the cost for 144 KW = 144 x 0.07 = $10.08
I believe the answer for 1) is
PEgrav = mass • g • height
PEgrav = m *• g • h
Answer:C
Explanation:
Given
weight of object is equal to weight of object
Suppose weight of Planck is W
suppose weight is at distance of x cm from wedge
balancing Torque
i.e. at a distance of 0.25L from the Left end
Answer:
Explanation:
initial velocity, u = 0
final velocity, v = 80 ft/s
acceleration, a = 150 ft/s²
Let the time taken is t.
v = u + at
80 = 0 + 150 x t
t = 0.53 second
The constant in Newton's law of gravitation relating gravity to the masses and separation of particles, equal to 6.67 × 10-11N m2 kg-2.