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The three charges in the figure below are at the vertices of an is osceles triangle. Let q = 1.00 nC and calculate the electric potential at the midpoint of the base.
A car started frm rest and accelerated for 5s at 6.00m/s2.Then it stayed at a constant speed for 20 s. It next slowed down at 3m/s2 until it came to a stop? how far did it travel during the first 5 s.
A fire hose held near the ground shoots water at a speed of 6.2 m/s.At what angle(s) should the nozzle point in order that the water would land 2.5 m away.
A 55.0-kg child takes a ride on a Ferris wheel that rotates four times each minute and has a diameter of21.0 m. What is the centripetal acceleration of the child
A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.6 km from the shore and 2.5 km upstream from the dock. A rescue boat with speed 24.8 km/hr (with respect to the water) ..
A sample of a radioactive isotope is measured to have an activity of 237.1 mCi. how many nuclei of the isotope are there at this time
If a charge of 0.30 C passes through a person's chest in 1.0 s, If this rate of charge transfer persists for 4.4s, how many electrons pass through the chest
An object at distance (s) from a concave mirror of focal length (f) produces a real image at distance(s*) from the mirror. Will the new image be real or virtual
Your forehead can withstand a force of about 6.0kN before fracturing while your cheekbone can only withstand about 1.3 kN. what is the magnitude of the balls deceleration
A hot-air balloon is ascending at the rate of 12 m/s and is 84 m above the ground when a package is dropped over the side. Explain how long does the package take to reach the ground?
You take a set of measurements for the wavelengths and frequencies of standing waves on a string that is under a tension of 1.96 N. What is the linear mass density of the string
two objects push on each other. the first object has a mass 30kg and it accelerates at 2m/s2 toward the east. what is the force acting on the first object
A circular coil 19.0cm in diameter and containing nine loops lies flat on the ground. Determine the torque on the coil. Express your answer using three significant figures and include the appropriate units
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