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A particle of charge Q is fixed at the origin of anxy coordinate system. At t = 0 a particle(m = 0.776 g, q = 5.04 µC is located on thex axis at x = 18.7 cm, moving with a speed of39.8 m/s in the positive y direction. For what value ofQ (in μC) will the moving particle execute circularmotion? (Neglect the gravitational force on the particle.)
A rifle with a barrel length of 59 cm fires a 8 g bullet with a horizontal speed of 350 m/s, What resistive force (assumed to be constant) does the wood exert on the bullet
Tammy leaves the office, drives 64km due north, then turns onto a second highway and continues in a direction of 33 degrees north of east for 79 km. What is her total displacement from the office
A light ray of ? = 430 nm enters at an angle of incidence of 36.2o from air into a block of plastic. Its angle of refraction is 21.7o. What is the speed of the light inside the plastic?
A parallel plate capacitor has a separation between its plates of 1.0 mm. There is a dielectric with a dielectric constant of 2.1 fi ling the gap. what is the area of one of the capacitor plates
A wave on a string has a speed of 331 m/s. If the tension in the string is 143 N and its length is 1.8 m, what is the mass of the string
A 3.2 kg sloth hangs 3.2 m above the ground. What is the speed of the sloth at this time
The output voltage of a 81W transformer is 12V , and the input current is 19A. By what factor is the voltage multiplied
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 190 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. How many nuclei are in the beam
A 6.0 kg block of aluminum is heated from 20°C to 90°C at atmospheric pressure. Find the work done by the aluminum
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. find the angular speed of the neutron star
A satellite has a mass of 102 kg and is located at 2.02 106 m above the surface of Earth. find the magnitude of the gravitational force on the satellite
A rectangular channel n=0.012, 3.05m wide laid on a slope of 0.0049 carries 13.6 m^3/s. The channel is to be contracted to produce critical flow. What width of contracted section will accomplish this, neglecting any loss in the gradual reduction in w..
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