Answer:
a) Acceleration = 7.41 m/s^2
b) Distance ran = 6.75 m
Explanation:
For Acceleration use the formula...
a = (v - u) ÷ t....where v=10 and u=0....and t=1.35
a = (10 - 0)÷ 1.35
;acceleration = 7.41m/s^2
For the distance moved in 1.35s
;use the...s = ut + 1/2at^2....where s is the distance moved
;s = (0)(1.35) + 0.5(7.41 × 1.35^2)
Distance moved = 6.75m
Answer:
The one you have selected is correct. :)
Explanation:
density = mass/volume
50 kg to g
50*1000 = 50,000 grams
200 mm to cm
200*0.1 = 20 cm
Substitute: 0.8=50,000/volume of a cylinder
volume of cylinder= (pi)(r^2)(h)
volume of cylinder=(pi)(20^2)(h)
0.8=50,000/((pi)(20^2)(h))
0.8=50,000/400*pi*h
50,000/0.8=400*pi*h
62,500=400*pi*h
62,500/(400*pi)=h
h≈49.74 cm
Answer:
A. Heat flows from an object at higher temperature to an object at lower temperature
Explanation:
The option A obeys the 2nd law of thermodynamics. The heat will flow from the object at higher temperature to the object at Lower temperature till they reach an equilibrial state.
Heat doesn’t necessarily flow from an object with higher thermal energy to an object with lower thermal energy because an object has a higher thermal energy when it’s mass is more than the other. This makes B wrong.
C is wrong because heat moves from an object with higher temperature to objects with Lower temperature regardless of the state of matter.
Sun is the biggest mass in the ss
