The x-component of the acceleration is
Explanation:
This problem is an example of uniformly accelerated motion, so we can solve it by using the following suvat equation:
where
u is the initial velocity
a is the acceleration
s is the displacement
t is the time
For the body in this problem, we have:
u = 11.1 cm/s is the initial velocity
The displacement is
s = -3.58 - (3.59) = -7.17 cm
While the time is
t = 2.48 s
Substituting and solving the formula for a, we find the x-component of the acceleration:
Learn more about acceleration:
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Answer:
The 5.53 moles of virus in an oil tanker.
Explanation:
Given:
Mass of virus mg
Mass of oil kg
From the formula of moles,
Moles of viruses is given by,
Mass of 1 oil tanker divide by mass of 1 mole of virus,
Therefore, the 5.53 moles of virus in an oil tanker.
Answer:
1250
Explanation:
Let's look at this in a simple manner, because it is.
The crane weights 250Kg. Okay.
Since it is hung, there is the acceleration of gravity being applied on it (10m/s²)
Since F = m * a
F = 250 * 10
F = 2500
Now we know that the downward Force is 2500N.
To find the force that is being applied on that 30° angle, we can multiply our 2500N by cos30°, which happens to be .
Therefore, the force pulling the box in the cable's direction is:
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Answer:
doubles
Explanation:
The relationship between angular speed and linear speed in case of a circular motion is the following:
where
v is the linear speed
is the angular speed
r is the distance from the centre of the circular path
In this proble, the pet hamster moves to a point twice as far from the center; this means that its distance from the centre, r', is doubled:
While the angular speed remains the same. Therefore, the new linear speed is
So, the correct answer is
the linear speed doubles
The first one because the temperature of the water outside is higher than the one on the inside therefore the one on the inside is heating up