What happens to the angle of the wave if it hits the Perspex at 90 degrees?

Which of the following characteristics of stars is affected by a stars temperature? 1. Brightness 2. Color 3. Distance from Earth 4. Size

A 1440 kg car has just passed a diner. The closest the car came to the diner was R = 16.5 m, but the car has driven another x = 36.7 m in the 2.05 s elapsed since then.

What is the energy level for calcium

What strongly affects the movement of the air masses along the earths surface

How do positive charges in solids versus positive charges in liquids vary when it comes to the flow of electric charge?

Total energy input is 1400 and my efficiency is 80% so what is the useful energy output in jules?

What is the force of gravity acting on a 2000-kg spacecraft when it orbits two Earth radii from the Earth's center (that is a distance r=6380 km above the Earth's Surface. The mass of the Earth is 5.98 x 1024 kg.

An LC circuit has a 6.00 mH inductor. The current has its maximum value of 0.570 A at t = 0s. A short time later the capacitor reaches its maximum potential difference of 66.0 V. What is the value of the capacitance?

The first law of thermodynamics states that ΔE = Q - W. Is this also a statement of the principle of conservation of energy? Yes, the heat added and the change in internal energy of the gas equal the work done by the piston.

How can we calculate the density of a sustance that has irregular volume