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You drive for 30.0 min at 60.0 mph and then stop for 15.0 min. You then drive for 45.0 min at 40.0 mph. Determine your average speed for this trip?
A 63kg person rides in a 30kg cart moving at 14m/s at the top of a hill that is in the shape of an arc of a circle with a radius of 30m. What is the apparent weight of the person as the cart passes over the top of the hill
A 29 kg sled starts from rest at the top of a frictionless hill inclined at an angle of 20 degrees to the horizontal. find the normal force on the sled due to the hill
A car with mass 2000.0kg is moving from rest with acceleration 0.50m/s^2. What is its speed after 4.0s of motion? What is its kinetic energy at that instant of time
A 6-µF capacitor in series with a 2-? resistor is charged with a 9-V battery for a long time by closing the switch, Determine the maximum current through the inductor
A bucket of mass 1.60 is whirled in a vertical circle of radius 1.45. Find the speed of the bucket
There are three masses arranged on the vertexes of an equilateral triangle with side L. what is the speed of each mass at infinity
Assume that a certain concave spherical mirror has a focal length of 10.0cm. Determine whether the image is real or virtual
water flows through a horizontal pipe, and then out into theatmosphere at a speed of v1=12 m/s. what is the gauge pressure in the left section of the pipe
A person can be killed if a current as small as 50 mA passes near the heart. An electrician is working on a humid day with hands damp from perspiration. What potential difference between the two wires
a friend asks you how much pressure is in your car tires. you know that the tire manufacturer recommends 30 psi but its
A 0.291-kg volleyball approaches a player horizontally with a speed of 12.2 m/s. What impulse is delivered to the ball by the player
question a river flows from south to north at 5.0 kmh. on this river a boat is heading east to west perpendicular to
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