Which aspect does a light-year measure?

How does a vacuum flask keep drinks hot? Explain in terms of conduction, convection and radiation.

Wire of resistance 6.2 Ω is connected to a battery whose emf ε is 4.0 V and whose internal resistance is 0.38 Ω. In 2.

What type of blood does the night side of the heart receive?

What 2 characteristics of stars are shown in an H-R diagram?

A 1.41 µF capacitor charged to 51 V and a 2.49 µF capacitor charged to 31 V are connected to each other, with the two positive plates connected and the two negative plates connected. What is the final potential difference across the 2.

What happens (as far as energy goes) when a molecule of gas strikes the wall of a container?

The boom of a fire truck raises a fireman (and his equipment - total weight 280 lbf) 60 ft into the air to fight a building fire.

Two masses are separated by 1 m. suppose the masses are moved so they are 2 m apart how will the gravitational force change

Bob rubs a piece of fur on a hand rubber rod, giving the rod a negative charge. what happens?

The period of a simple pendulum is 3.8 s. the length of the pendulum is doubled. what is the period t of the longer pendulum? t = s