1.) A laser beam is reflected by a plane mirror. It is observed that the angle between the incident and reflected beams is 30. What is the angle of reflection? Explain

2.) A ray of light strikes a plane mirror with an angle of 30 above the horizon.
What is the angle of incident?
What is the angle of reflection?
Show your work

3.) Looking at the figure on the side? (attached)
How many times will the light strike the top of the mirror?
The distance between the two parallel mirrors is 70 cm, and the length of each mirror is 100cm

thank you to anyone who will solve it <3

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

Apiece of metal 75g at 110°c is dropped in a container with 500g at 20°c. the h2o if temperature is 24°c find specific heat capacity of metal

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?