From the fact that virtually every galaxy is moving away from us and more distant galaxies are moving away from us at a faster rate than closer ones, we conclude that

a ball is dropped from rest at a 80m above the ground. How long does it take for it to reach the ground?

Sometimes, when the wind blows across a long wire, a low-frequency "moaning" sound is produced. The sound arises because a standing wave is set up on the wire, like a standing wave on a guitar string. Assume that a wire (linear density = 0.

A square is cut out of a copper sheet. A circular hole is drilled in the square. The square is heateduniformly. As a result, the diameter of the hole increases decreases stays the same The answer depends on the size of the hole.

A women lifts a 300 newton child a distance of 1.5 meters in 0.75 seconds. What is her power output in lifting the child?

What statements are true about clouds?

Em um recipiente foram colocados 800ml de álcool, cujo coeficiente de dilatação volumétrica é 1,8.10

What is projectile motion

How much charge has been transferred from the negative to the positive terminal?

2. A 5 Ohm resistor is connected to a 9 Volt battery. How many Joules of thermal energy are produced in 7 minutes? 3. The current in a flashlight powered by 4.5 Volts is 0.5 A. What is the power delivered to the flashlight? 4.

What do you think the future of the UK's energy resources should be?