Answer:
a) 
b) 
m/s
c) 
= 1.952 kg.m/s
Explanation:
Given:
Mass of the skateboard, 
= 1.5 kg
Combined mass, 
= 105 kg
velocity of the book, 
= 2.97 m/s
angle, θ = 26°
thus,
horizontal component of the velocity = vcosθ
vertical component of velocity = vsinθ
a) Applying the concept of conservation of momentum
where,
is the velocity of the the student
thus,
............(1)
b) on substituting the values, in the equation we get the magnitude
or
m/s
c) Now, the momentum (P) transferred is given as:
P = mass × velocity
on substituting the values, we get
= mass × velocity
or
= 
on substituting the values, we get
= 
or
= 1.952 kg.m/s
It is more similar to a noble gas because noble gases are the group 18 elements. Noble gases are gases which have their outer shell complete and so cannot give out or gain any more electrons. And cannot react with other elements. Hope i helped.
Answer:
D) Insects would have trouble walking on the water.
Explanation:
It should be noted that the student should use K = 1/2mv² with the initial speed of the block for one trial.
<h3>
Method of using the data collected.</h3>
From the complete information, the student wants to use the data collected and the known quantities from the experiment to determine the initial total mechanical energy of the block-ramp-Earth system for all trials in the experiment.
In this case, it's important to use K = 1/2mv² with the block's initial speed for one trial due to the fact that the initial speed is the same in all the trials.
Learn more about experiments on:
brainly.com/question/17274244
He proposed the theory of Continental Drift. He believed that all of the continents were once joined together in a super continent he called Pangea (not sure if that's spelled right I studied this awhile ago). He proved this by showing similarities in fossils in completely different continents and showing how well the continents could fit together.
