Given that there is not figure with the plane and positions, I assume the data are self-explanatorye.
So,
Position A = sea level = 0 m
Postion B = 0.25 m
Difference in the gravitational potential energy of the ball between positions A and B:
ΔPE = m * g * Δh = 0.7 kg * 9.8 N/kg * 0.25 m = 1.715 N*m = 1.715 J
Answer: 1.715 J
Answer:
variable
Explanation:
Globular clusters is defined as collection of numerous star that revolve around the galaxy core. they are so bound to each other that they formed spherical shape. This boundness among the star is due to gravity. The main characteristics of globular cluster is that they contain high density of star at center.
Every galaxy consist of various number of globular cluster and even milky way consist of 125 to 200 cluster
Answer:
a)W=20 KJ
b) ΔQ= 220 KJ
Explanation:
Given:
V₁=0.1 m^3, P₁=200 kPa and heat is added to the system such that system expands under constant pressure.
Therefore V₂= 2V₁= 0.2 m^3
a) Work transfer W= P(V₂-V₁)=
W=20 KJ
b) internal energy change ΔU= 200 KJ
from first law we know that ΔQ(net heat transfer)= ΔU + W
ΔQ=
ΔQ=
ΔQ= 220 KJ
Answer:
Bike
Explanation:
bike is the most complex on here, chain, brakes, gears, and tries,
inclined plank is a little complex, gears and plates
lever requires gears or eletric wires,
and least complex is A screw
Answer:
Water vapor and carbon dioxide
Explanation:
These gases then emit the infrared radiation in all directions, both outward toward space and downward toward Earth. ( Ignore the explanation if it's not helpful)