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Amy is traveling at 60 miles per hour on the highway, due north. The on-ramp nearby starts out going west, and then curves around thus that eventually it is also north, parallel to the highway. Bob appears, traveling 40 miles per hour going west.
Find his speed relative to Amy? In the next moment, he is heading due northwest, now going 50 miles per hour.
Find what is his speed relative to Amy at this point? Later on, he is finally on the northward portion of the ramp, and has accelerated up to 55mph.
Determine what now is his speed Relative to Amy?
the secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. the turns
A light bulb is wired in series with a 119- resistor, and they are connectedacross a 120.0-V source. The power delivered to the light bulb is22.3 W. What is the resistance of the light bulb? There are twopossible answers. Give the larger of the two.
An artillery shell is fired at an angle of 47.8o above the horizontal ground with an initial speed of 1930 m/s. Calculate the total time of flight of the shell
A sign (mass 1800kg ) hangs from the end of a vertical steel girder with a cross-sectional area of0.019m2 . Ignore the mass of the girder itself. What is the stress within the girder
You are stranded on a deserted island. You have some wire, but no magnets. You decide to use the Earth's magnetic field, the only one available to you. What area must the coil have
A woman is 1.6 m tall and has a mass of 53 kg. She moves past anobserver with the direction of the motion parallel to her height. What does the observer measure for her height
A bicycle wheel of radius 20 cm is mounted at the middle of an axle 43 cm long. The tire and rim weigh 24 N. The wheel is spun at 13 rev/s, What is the angular speed of precession
A magnifying glass of diameter 10.5 cm focuses sunlight into a spot of diameter 0.550 cm. What is the energy flux in the local spot
An object has a total energy of 5.60 × 1015 J and a kinetic energy of 1.40 × 1015 J. find the magnitude of the object's relativistic momentum
During an all-night cram session, a student heats up a 0.836 liter (0.836 x 10- 3 m3) glass (Pyrex) beaker of cold coffee. How much coffee (in cubic meters) has spilled out of the beaker
A uniform rod of length 0.790 m and mass 14.50 kg is balanced on a sharp edge at 0.650 m from the left end. At the left end hangs a mass of 45-kg and the right end hangs an unknown mass so that the whole assembly is in equilibrium.
A bowling ball (mass = 7.2 kg, radius = 0.14 m) and a billiard ball (mass = 0.47 kg, radius = 0.028 m) may each be treated as uniform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
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