Answer:
By Rotation, Hrs per day and how long a year lasts and how long it will take for the planet to orbit around the sun
Explanation:
my answer basicly sums it up
As we know that when charge is released in electric field
It will have two forces on it
1. electrostatic force
2. gravitational force
now if the ball will accelerate upwards so we can say
net upward force = mass * acceleration
now we can find charge q on it by above equation
So above is the charge on the particle
Answer: Option (c) is the correct answer.
Explanation:
According to the second law of motion mass of an object times its acceleration is equal to the net force on the object.
Mathematically, F = ma
Generally, mass is expressed in kilograms (kg) and acceleration is expressed as follows.
acceleration =
=
=
Hence, S.I unit of acceleration is .
Therefore, units of force will be as follows.
F = ma
=
Thus, we can conclude that gives the correct units for force.
Radio-waves
Explanation:
When a police officer uses radar for speed control, the officer is using an electromagnetic radiation known as radio-waves.
- Electromagnetic waves are waves that are produced by the vibration of both magnetic and electrical fields.
- Radar is made up of radio waves.
- Radio waves are classified as non-ionizing electromagnetic radiations.
- The characteristically have long wavelength and low frequency.
- They are often used for long range communication.
- In airports, radio towers uses a radar system to communicate with aircraft.
Learn more:
Electromagnetic waves brainly.com/question/6818046
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Answer:
v = 135.13 mph
Explanation:
Given that,
The race car was moving for 3.7 hours and during that time it traveled a distance of 500 miles south.
We need to find the speed of the car.
We know that,
Speed = distance/time
So,
So, the speed of the car is equal to 135.13 mph.