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During winter, a baseball player works out with a 50-kgpitching machine. The ground is covered with a thin layer of ice,so that there is no friction between the ground and the machine.The machine "throws" a 0.15 kg baseball horizontally witha speed of36 m/s. What is the recoil velocity of the machone?
The same device can act as both an air conditioner and a heat pump (after all, they do the same thing), what is the coefficient of performance of the device acting as a heat pump
A certain kind of glass has an index of refraction of 1.640 for blue light of wavelength 430 nm and an index of 1.595 for red light of wavelength 680 nm. what is the angle between the two beams inside the glass
Electromagnets that produce large magentic fields use water cooling to prevent excessive heating of the magnet's coils. How many liters of water must circulate by the coils each second if the temperature of the coils is not to exceed 49°C
A small object with a mass of 380mg carries a charge of 20.0 nC and issuspended by a thread between the vertical plates of aparallel-plate capacitor. what is the potential difference between the plates
An athlete starts at point A and runs at a constant speed of 6m/s around a round track 100 m in diameter, what is x component of this runner's average velocity between points A and B.
Two runners of mass 70 kg and 60 kg,respectively, have a total linear momentum of 350 kg*m/s. The heavier runner is running at 2.0m/s. Examine the possible velocitis of the lighter runner.
A 14.1- resistor, a 11.8-?F capacitor, and a 18.8-mH inductor are connected in series with a 121-V generator. At what frequency is the current a maximum
A petite young woman distributes her 540N weight equally over the heels of her high-heeled shoes. Each heel has an area of 0.850 cm^2, What pressure is exerted on the floor by each heel
Figure (a) below gives the magnitude E(x) of the electric fields that have been set up by a battery along aresistive rod of length L = 9.02 mm (Fig. belowb). The vertical scale is set by Es =4.02 ×103 V/m.
Considering just the Sun and Jupiter, determine the radius of the circular orbit the Sun makes about the Sun-Jupiter center of mass
What is the thermal stress in a SiO2 film that is deposited at 950 C on a Si substrate after it returns to room temperature? Is it tensile or compressive?
Calculate the gravitational force exerted on the satellite by the Earth when it is in orbit
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