Кусок проволоки и лампочка имеют одинаковые сопротивления. Лампочку подключают к сети так, что она нагревается на 750 С. На сколько процентов нужно увеличить длину проволоки, чтобы их сопротивления вновь сравнялись?

Consider a helium balloon on a string tied to the seat of your stationary car. The windows are closed, so there is no air motion within the car. The car begins to accelerate forward. Which way will the balloon lean, forward or backward

What most likely led to the change from the static universe theory to the expanding universe theory?

A 2.3 kg cart is rolling across a frictionless, horizontal track towards a 1.5 kg cart that is initially held at rest. The carts are loaded with strong magnets that cause them to attract one another. Thus, the speed of each cart increases.

A cello string 0.75 m long has a 220 hz fundamental frequency. find the wave speed along the vibrating string. answer in units of m/s.

Carlos gives a grocery cart a 60-N push. The cart has a mass of 40 kg. What is the cart's acceleration?

How does the idea of rotating disk in the nebular model explain certain observed celestial phenomena?

If a small child were to release a balloon into the atmosphere, what would happen to the size of the balloon as it makes it way higher in the sky?

Is a aluminum pie plate an element

The age of the solar system can be established by radioactive dating of

What changes in the original atom are expected as a result of this natural phenomenon