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In coming to a stop, a car leaves skid marks 85 m long on thehighway. Assuming a deceleration of 4.0 m/s2, estimate the speed of the car just before braking.
when a resistor is connected to a 10v source it draws a 185ma current. the same resistor connected to a 96v source
An 271 N object is moving to right when forces act on it Two forces act in + y direction (up) 32 N and 17 N One force acts in down , -y, direction 20N Two forces act to right , +x, direction 18 N and 26N, Determine the net force on the particle
Two ships are moving along a line due east (see figure below). The trailing vessel has a speed relative to a land-based observation point of v1 = 59.5 km/h, What frequency is monitored by the leading ship
The distance to a particular star, as measured in the earth's frame of reference, is 7.11 light years, How long does the trip take, according to observers on earth
A pendulum consists of a 3.1 kg stone swinging on a 3.8 m string of negligible mass. The stone has a speed of 7.9 m/s when it passesits lowest point. (a) What is the speed when the string is at 57° to the vertical?
The lighter ball is pulled away to a 60 degrees circular angle with the vertical and released. Illustrate what is the speed of the lighter ball before impact?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the time the ball is in the air
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, which has a focal length of 27.0 cm. What is the focal length of the second lens
a 5.00-kg object moves clockwise around a 50.0 cm radius circular path. at one location the speed of the object is 4.00
The end of the cutting cord on a gas-powered weed cutter is 0.15 m in length. If the motor rotates at the rate of 20 rev/s, what is the tangential speed of the end of the cord
Water is boiling in a pan at sea level on a stove. During 10 minutes of boiling, it is observed that 200 grams of water has evaporated. Then the rate of heat transfer to the water is what is kJ/min?
Vector has a magnitude of 7.20 units and makes an angle of 39.5° counter-clockwise from positive x-axis. Vector has a magnitude of 8.00 units and is directed along the negative x-axis.
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