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A grandfather clock is controlled by a swinging brass pendulum that is 0.90 m long at a temperature of 30.°C.
(a) What is the change in the length of the pendulum rod when the temperature drops to 0.0°C?
A cylindrical bucket, open at the top, is 28.0 cm high and 10.0 cm in diameter. How high will the water rise in the bucket
The radius of the hydrogen atom is 0.053 nm. compute the frequency of the circular motion of the electron
question 1 a 0.49 copper rod with a mass of 0.18 carries a current of 13 in the positive x direction. let upward be the
what is the saturation activity of 24na that can be induced in a 400 g sample of nacl with a constant thermal-neutron
1. in a particel accelerator protons are fired at a stationary target and collide elastically with the nuclei of the
If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. At night in a dry climate, Estimate the net rate at which your body loses energy by radiation to the night sky under thes..
A ball rolls from rest down a roof without slipping. the roof has pitch of 30 degree until there is a flat, horizontal section near the edge of the roof. what was its angular momentum when it left the roof
You are given three capacitors, with capacitances 0.0077 µF, 12000 pF, and 0.027 µF. Choosing from these three capacitors, How would you connect them in each case
A ray of light strikes a flat, 2.00-cm-thick block of glass (n = 1.54) at an angle of ? = 29.2° with respect to the normal (see figure below). Find the angle of refraction at the top surface. Find the angle of incidence at the bottom surface and the..
The side-view mirror of an automobile has a radius of curvature of 15.0 cm. How far is the object from the mirror
Helium is used to fill a balloon of diameter 31 cm at 23C and 1.5 atm. The mass of a helium atom is 4.0026 u, the conversion factor from u to kg is 1.66 × 10?27 kg/u, What is the average kinetic energy of each Helium atom
A sealed cubical container 12.0 cm ona side contains three times Avogadro's number of molecules at atemperature of 22.0°C. Find the force exerted by the gas
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