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The reflecting surfaces of two mirrors form a vertex with an angle of 120 degrees. If a ray of light strikes mirror 1 with an angle of incidence of 55 degrees, find the angle of reflection of the ray when it leaves mirror 2.
To fill a child's inflatable wading pool, you use a garden hose with a diameter of 2.90 cm. Water flows from this hose with a speed of 1.50 m/s. How long will it take to fill the pool to a depth of 25.0 cm if the pool is circular and has the diame..
an automobile suspension involves both leaf springs with stiffness k and shock absorbers resist motion with a force
What is the electric potential 3.0×10^?11 from a proton (charge +e)? Let V=0 at r=infinity. What is the potential energy of an electron at this point
If the uncertainty in the energy of an excited state is a billionth of an electron volt (1 neV), what is the half-life of the state
I just got this wrong for the third time. A u-tube manometer is used to measure the pressure of a vessel under vacuum. Assume the manometer is open to atmospheric pressure.
A mechanic pushes a 2.40 103 kg car from rest to a speed of v, doing 4950 J of work in the process. During this time, the car moves 29.0 m. Neglecting friction between car and road,
A person stands on a scale in an elevator. As the elevator starts, the scale has a constant reading of 588 N. Determine the weight of the person
if a large enough electric field is applied even an insulator will conduct an electric current as is evident in
A structural I beam is made of iron. A view of its cross-section and its dimensions is shown in the figure, where d = 2 cm, w = 29 cm, h = 30 cm, How many atoms are there in this section
Take element Z = 69 from the periodic table. Ionize it 68 times so that there is only one electron left orbiting around the nucleus. What is the ground state energy of the electron
A thin lens has a focal length of 10.00 cm for red light. If the index of refraction for the lens material tends to decrease with increasing wavelength
Work of 600 J is done by stirring and insulated beaker containing 100 gm of water? What is the change in temperature of the water
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