Answer:
1)A
2)B
3)C
4) D
5) C
Explanation:
1)
System is an isolation of matter that has been chosen out of the universe and studied.
2)
Surroundings are everything outside the system that interacts with the matter within the system externally
3)
Thermal energy is associated with constant random motion of atoms and molecules associated with Temperature.
4)
Chemical energy is the energy stored in the bonds between the atoms and molecules. Breaking and making of these bonds lead to releasing and absorbing of energy to surroundings.
5)
Kinetic Energy is the energy associated with the motion of the particles.
Answer:
31.55 m/s
Explanation:
Let the initial velocity of the arrow is u metre per second.
Angle of projection, θ = 40 degree
range = 100 m
Use the formula for the range.
100 = u^2 Sin(2 x 40) / 9.8
100 x 9.8 = u^2 Sin 80
u^2 = 995.11
u = 31.55 m/s
Answer:
To maintain enough time to prevent a collision, a system operating in air traffic where aircraft speed does not
fall below 100 km/h (most medium-sized UAVs and GA aircraft) will need to be able to detect obstacles which
subtend an arc-width of as small as 0.125 mra
Answer:
it depends on the relative masses of the objects.
Explanation:
