Answer:
The volume of water displaced the same as the volume of the block.
Explanation:
With respect to the principle of floatation, when an object floats in a fluid; its weight is the same as the volume of the fluid displaced.
The volume of the block relates to is dimension and size which can be compared with the volume of the fluid displaced. When the block is floats in water, it would displace a reasonable volume of water. Thus, it would be expected that the volume of water displaced by the block is equal to the volume of the block.
Answer:
The correct answer would be - D. Cooking eggs
Explanation:
Among the given options there are 3 options that show exothermic reaction which means they give off the energy in the process. The running curs engine is the process that absorbs heat but releaseS it right away so it only transfers the energy. Activating a heating pad also transfers the energy from electric energy to thermal energy. Burning wood is a chemical reaction that releases energy in the form of light and heat.
The raw eggs absorb the heat from the pan and change its form but do not release it to the surrounding in any form while cooking. It is an endothermic reaction.
Answer:75m
Explanation: simple kinematics . xo=0 , vo=0
x=xo+vo*t +at*t/2 = 6*5*5/2 =75m
Answer: C
Explanation: After the astronaut applies force, he moves.
Answer:
the initial velocity of the ball is 17.14 m/s
Explanation:
Given;
maximum height reached by the ball, h = 15 m
let the initial velocity of the ball = u
at maximum height, the final velocity of the ball is zero, v = 0
The initial velocity of the ball is calculated by using the following upward motion kinematic equation;
v² = u² - 2gh
0 = u² - 2(9.8 x 15)
u² = 294
u = √294
u = 17.14 m/s
Therefore, the initial velocity of the ball is 17.14 m/s
