An alien spacecraft flies directly over a football stadium at a speed of 0.50c. if the proper length of the field is 100 yards, what field length is measured by the crew of the alien spacecraft?

What type of craft should be used for orienteering in the water?

A reactionary force when pushing

The person in the middle weighs 500 n, and the tension on the rope is 400 n. what is the weight of the scaffolding?

A Carnot engine takes 3000 J from a reservoir at 600 K, does some work, and discards some heat to a reservoir at 300 K. What is its efficiency? 50% 60% 20% 30%

What is a transverse wave? a. particles that travel parallel to the direction of energy movement b. particles that travel in a reverse direction to the direction of energy movement c.

A cell provides 6 V to an LDR. The current through this LDR is measured and is found to be 3 A. What is the resistance of the LDR?

A car travels along eastward with a constant velocity. the magnitude of the acceleration of the car is

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?