Answer:
a)
b)
c)
Explanation:
From the question we are told that:
Initial speed of 1st ball
Mass of 1st ball
Mass of 2nd ball
Initial speed of 2nd ball
Final speed of 2nd ball
Angle of collision
a)
Generally the equation for law of conservation is mathematically given by
The final velocity is given as
b)
Generally the equation for law of conservation is mathematically given by
c)
Generally the equation for kinetic energy is mathematically given by
1st Ball
2nd ball
Therefore the change in the total kinetic energy of the two balls as a result of the collision is
Friction can be defined as a type of force that prevents two smooth surfaces from sliding together on each other. Friction is a strong force that oposses motion when two surfaces come in contact with each other.
The different methods/ways to reduce friction include;
- Application of lubricant to surfaces
- Streamlined bodies; this goes a long way in preventing friction between two bodies.
- Decrease in weight; reducing the amount of weight on a substance can also help to reduce friction
- Applying wheels to objects that move/roll on the ground.
Explanation:
Since the neutron is only moving at 1000 m/s, we are going to ignore the relativistic effects on its mass and energy. The mass of a neutron in so its kinetic energy KE is
A photon's energy E is defined as
where is the photon's frequency and h is the Planck's constant. Solving for the frequency, we get
which is right around the infrared radiation range.
To solve this problem we will use the concepts related to Ohm's law for which voltage, intensity and resistance are related.
Mathematically this relationship is given as
Where,
V= Voltage
I = Current
R = Resistance
The value of the given voltage is 12V, while the current is 12mA, therefore the resistance would be
Therefore the resistance is
D)
Whenever a person is climbing up a rope, or when the force is being pulled down by the rope, it's called tension.