An advantage of electron microscopes compared to light microscopes is that electron microscopes are inexpensive and commonly use
2 answers:
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Answer:
<h2>1000 kg</h2>Explanation:
The mass of the car can be found by using the formula
f is the force
from the question we have
We have the final answer as
<h3>1000 kg</h3>Hope this helps you
Answer:
the correct answer is C, E’= 4E
Explanation:
In this exercise you are asked to calculate the electric field at a given point
E =
indicates that the field is E for r = 2m
E = (1)
the field is requested for a distance r = 1 m
E ’= k \frac{q}{r'^2}
E ’= k q / 1
from equation 1
4E = k q
we substitute
E’= 4E
so the correct answer is C
Answer:
4L
Explanation:
mass of pendulum = M, length of pendulum, L1 = L,
acceleration due to gravity = g, Amplitude = A
Use the formula for the time period for simple pendulum
..... (11)
Let the new length be L2 for which the time period is 2T.
..... (2)
Divide equation (2) by equation (1)
So, L2 = 4 L
Thus, the length of the pendulum is 4 L.