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Suppose a slide similar to Der Stuka is 38.8 meters high, but is a straight slope, inclined at 45° with respect to the horizontal.
(a) Find the speed of a 56.4 kg thrill seeker at the bottom of the slide, assuming no friction.
____
(b) If the thrill seeker has a speed of 24.6 m/s at the bottom, find the change in mechanical energy due to friction.
____J
(c) Find the magnitude of the force of friction, assumed constant.
____N
An X-ray tube is similar to a cathode-ray tube. Electrons are accelerated to high speeds at one end of the tube. What speed would this potential difference give to protons
A rectangular loop is 1.2 m wide and 0.80 m tall and carries 0.50 A of current clockwise. Find the net force and torque on the rectangular loop
An electric water heater operates at 66 A and 16 kilowatts, Calculate N (the total number of resistors) and the cost of manufacturing the heating element if in a pack of 100 resistors cost $0.50
The centripital force of 45N is required to resolve a stone of mass 100g along a circular path of radius 50cm. Find the constant speed of the stone
three resistors 2,6,and 12 are in parallel connected across a dc voltage source of the total current through this circuit is 2.0A, what is the applied voltage
q1. over a 30-day period a power plant generates an average of 751 mw of electrical power and 1225 mw of waste heat and
A mortar* crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. How fast will the shell be traveling when it hits the ground
Transverse waves with a speed of 59.0 m/s are to be produced on a stretched string. A 4.95-m length of string with a total mass of 0.0600 kg is used. (a) What is the required tension in the string? N (b) Calculate the wave speed in the string if t..
A 0.61 kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
A vertical scale on a spring balance reads from 0 to 245 rm{N}. The scale has the length of 11.0 rm{cm} from the 0 to 245 rm{N} reading. A fish hanging from bottom of the spring oscillates vertically at a frequency of 3.00 rm{Hz}.Ignoring the mass..
From the difference in mass of a hydrogen atom (Appendix B) to the mass of a proton and an electron (Table 1.5), estimate the binding energy of the electron in the hydrogen atom. Compare this to the ionization energy of the ground state electron a..
A glass plate (n= 1.61) is covered with a thin, uniform layer of oil (n=1.16). A light beam of variable wavelength is normally incident from air onto the oil surface. calculate the thickness of the oil film
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