Answer:
The coefficient of friction and acceleration are 0.37 and 2.2 m/s²
Explanation:
Suppose we find the coefficient of friction and the acceleration of the 100 kg block during the time that the 60 kg block remains in contact.
Given that,
Mass of block = 60 kg
Acceleration = 2.0 m/s²
Mass = 100 kg
Horizontal force = 340 N
Let the frictional force be f.
We need to calculate the frictional force
Using balance equation
Put the value into the formula
We need to calculate the coefficient of friction
Using formula of friction force
We need to calculate the acceleration of the 100 kg block
Using formula of newton's law
Hence, The coefficient of friction and acceleration are 0.37 and 2.2 m/s²
The answer is Light rays are reflected by mirrors
Answer:
I think Science,Math and Social
The area under a velocity time graph is distance travelled (as integrating velocity gives distance), so we can imagine the v/t as a line, giving a triangle with 2 sides of 13.8 and 18. The area of a triangle is bh/2, so 9*13.8 = 124.2m which is how far the car travelled in that time.
60.8cm is 0.608m, and now we can divide to work out the number of revolutions:
124.2/0.608 = 204.28 = 204 revolutions to 3sf (number of sf in the question assuming 18 is in fact 18.0, so the number you should give your answer to)
<span><span>A.</span>Gamma rays</span><span> <span>B.</span>Visible light</span><span> <span>C.</span>Ultraviolet radiation</span><span> <span>D.</span><span>Radio waves</span></span>
