Can you elaborate more on the question please
Answer:
0.5 m/s²
Explanation:
Applying,
F = ma............... Equation 1
Where F = Force applied to the chair, m = mass of the student, a = acceleration of the chair
make a the subject of the equation
a = F/m............ Equation 2
From the question,
Given: F = 35 N, m = 70 kg
Substitute these values into equation 2
a = 35/70
a = 0.5 m/s²
Hence the new acceleration of the chair is 0.5 m/s²
Answer:
42Amp
Dad's house is a message from
Answer:
a) 166.4 s
b) (2.155 × 10⁷) s
Explanation:
15600 KWh for a year,
1 year consists of 365 × 24 hours = 8760 hours.
So, the power consumed in a year for an average household = (Energy/time)
= (15600/8760) = 1.781 KW = 1781 W
a) If the average rate of energy consumed by the house was instead diverted to lift a 1.80 × 10 3 kg car 16.8 m into the air, how long would it take
The power required for this lifting = (mgh/t)
m = 1800 kg
g = 9.8 m/s²
h = 16.8 m
t = ?
P = 1781 W
1781 = (1800×9.8×16.8)/t
t = (296,352/1781)
t = 166.4 s
b) how long would it take to lift a loaded Boeing 747 airplane, with a mass of 4.05 × 10 5 kg , to a cruising altitude of 9.67 km
The power required for this lifting = (mgh/t)
m = 405000 kg
g = 9.8 m/s²
h = 9.67 km = 9670 m
t = ?
P = 1781 W
1781 = (405000×9.8×9670)/t
t = (38,380,230,000/1781)
t = 21,549,820 s = (2.155 × 10⁷) s
Hope this Helps!!!
