Answer: D
8.403 m/s
Explanation:
Given that the women's world record for the 400-meter run around an oval track is held by Marita Koch, with a time of 47.60
seconds.
Her average velocity during this race will be
Velocity = distance/ time
Velocity = 400 / 47.6
Velocity = 8.403 m/s
Therefore, her average velocity during this race will be 8.403 m/s
D is therefore the correct answer.
If I can't open the lid of a jelly jar, I'd keep trying and if I can't open the lid of a jelly jar after the MANY tries I took, I'd ask for help.
Answer:
38.87 m/s
Explanation:
Given that the ball is dropped from a height = 77 m
u = 0 m/s
s = 77 m
a = g = 9.81 m/s²
Applying the expression as:
Applying values as:
<u>The speed with which the ball hit the ground = 38.87 m/s</u>
The units of his measurement is newtons.
The person will feel cold.
Exothermic processes involve the loss of heat from the system, whereas endothermic processes bring heat into the system. Since heat is being lost from the system and heating up the test tube, reaction A is exothermic. The primary distinction between exothermic and endothermic reactions is that the former releases energy into the environment while the latter collects energy in the form of heat from its surroundings. Heat and light are significant indicators that a reaction has occurred when two chemicals are together. The reaction is exothermic if heat is released. Exothermic refers to a reaction in which molecules have transitioned from a higher to a lower energy state.
Learn more about endothermic reaction here :-
brainly.com/question/23184814
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