What is the speed of sound in air with a temperature of 25 degrees C

What is the work required to raise a 10. kg object from the surface of the Earth to a height of 2.0 m? A. 5.0 J B. 20. J C. 2.0 E2 J D. 2.0 E3 J

A copper sphere has a radius of 2.50 m under normal room pressure of 1.0 * 105 N/m2. If we increase the pressure on this sphere to 10 times the normal room pressure, what is the change in its volume? The bulk modulus for copper is 1.4 * 1011 Pa

Using a cathode ray tube, Thomson confirmed that atoms must have an overall positive charge. atoms are made of particles that have a negative charge. electrons in atoms must have varying amounts of energy. electrons are only found in the nucleus.

Which of the following devices would you expect to consume the most energy for each hour that it operates?

Why was Bohr's atomic model replaced by the modern atomic model

What do you call a drug that increases speed

2. How is frequency described in mathematical terms?

During a summer with little rainfall, your house on a hill slope experiences an interval during which your well runs dry. You have to borrow water from your neighbor who lives downslope from you. Why does your neighbor have water when you don't?

If a force does not act parallel to the resulting displacement, what is the effect on the work done by the force?

A stick is a connection of two same - diameter metal rod 5 cm, and a length of both stick is 0,6m. The thermal conductivity of the first rod 92 cal / s. m.°C, and the second stick 50 cal / s. m.°C.