Answer:
3.41 × 10^-6
It is because 341 has to be a decimal and the zeros you see there...always count them if the zero has the decimal after it it will be a negative. Why 10 to the power of Negative 6? Count the 6 zeros
Answer: See explanation
Explanation:
Gravity is simply referred to as the force of attraction between two particles or masses. Through gravity, the moon moves round the Earth.
Gravity also causes a fruit to fall from its tree. It can also cause an object to roll and fall from the table to the ground. In gravity, distance and mass are vital.
Answer:
58.8 Joules work must be done
Explanation:
Equations of motion related distance, velocity and acceleration:
v² - v₀² = 2 x acc x Δdistance
so acc = (0 - 28²)/ (2 x 0.8 m) = -490 m/s² (negative acceleration means deceleration)
Ave force F to decelerate mass 0.15 kg = m x a = 0.15 x 490 = 73.5 Newtons
Work done W = Force x distance = 73.5 N x 0.8 m = 58.8 Nm (i.e. Joules)
Answer:
The length is 
and the angle is 
Explanation:
The period 
of the pendulum is related to its length 
by
where 
is the acceleration due to gravity.
Solving for we get
putting in 
and we get:
There are two forces acting on the pendulum: The gravitational force 
and the 
student's force. Therefore, the angular displacement 
that these forces give is
putting in 
, 
, and we get
Answer:
The electron microscopes are uses the electron to produce the image of the any object.The area where the electron passes then that area appeaser white but on the other hand where the electron does not pass that area appears black.But this does not give any information about the color of light it shows only white and black areas.We also know that color is the property of photons ( light).So the microscopes does not produce color of the image.
