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A life preserver made of Styrofoam is designed to support a person weighing 575 N, with 80% of the body and 90% of the preserver submerged. Find the volume of Styrofoam required if the body's volume is 0.0530 m3.
A positive charge of q1 is located 4.59 m to the left of a negative charge q2. The charges have different magnitudes. How far to the left of the negative charge is one spot
A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm, At what point does the ball have maximum speed
a projectile is fired with an initial velocity of 15 m/s at an angle of 37 degrees. At t=2 s, find the vertical and horizontal positions of the projectile
A highway curve with radius 850 is to be banked so that a car traveling 52.0 will not skid sideways even in the absence of friction. At what angle should the curve be banked?
A positive charge q=3.2 x 10^-19 C moves with a velocity v=(2i + 3j - k)m/s through a region where both a uniform magnetic field, What angle does the force vector make relative to the positive x axis
A dog running in the +y-direction at 7.0 m/s hears its owner call from behind, Compute the dog's change in velocity
In a physics demonstration, a stationary mass m1 = 0.20kg slides down a frictionless ramp and then collides with a second mass m2 = 0.40 kg. Find the height needed if you reverse the masses
A 10720 kg sailboat is moving through the waters of the Atlantic. Initially, the boat is traveling at 35 mph, 33 degrees East of North. calculate the force of the wind on the boat
A small telescope has a concave mirror with a 4.00-m radius of curvature for its objective. Its eyepiece is a 4.25-cm focal length lens. What is the angle of its telescopic image?
Calculate the minimum required initial velocity for a home run, for baseballs hit at the angles 10 degree, 20 degree, 30 degrees, and 40 degrees from the horizontal
You are driving your car, and the traffic light ahead turns red. You apply the brakes for 2.56 s, and the velocity of the car decreases to + 4.62 m/s. What is the car's displacement
Two parallel plates of 0.5m high and 0.2m wide are a distance 0.25m apart. What is the Capacitance of the system. compute the Electric field
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