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Consider a 2210 lb automobile clocked by law enforcement radar at a speed of 85.5 mph. If the position of the car is known within 5.0 feet at the time of the measurement, what is the uncertainity in the velocity of the car???
A disk and a hoop of the same mass and radius are released at the same time at the top of an inclined plane. The height of the incline is 0.71m, Calculate the speed of the disk at the bottom of the inclined plane
An object is 5.7 cm from a spherical concave mirror. If the image is 4.7 cm tall and 10 cm from the mirror, how tall is the object
A wooder raft has mass of 76kg. When empty it floats in water (density 1000 kg/m^3) with 40% of its volume submerged
a 20 kg mass sits on an inclined plane with friction making an angle of 50 degrees with respect to the horizontal. calculate the frictional force required to keep the mass from sliding down the incline
A train is moving parallel and adjacent to a highway with aconstant speed of 23 m/s. Ini- tially a car is 34 m behind thetrain, traveling in the same direction as the train at 34 m/s, and accelerating at 3 m/s2. What is the speed of the car just a..
A body in free fall reaches the ground in 5 s. From what height in meters was it dropped
a baseball is thrown such that it is in the air for 4 seconds and lands 100 m away. find the initial vertical and
In a Compton scattering experiment, an x-ray photon scatters through an angle of 18.0° from a free electron that is initially at rest. Calculate the angle through which the electron scatters
A 80 kg person sits on a 4 kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure in pascals exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.
The tractor beam exerts a constant force of 4.0 104 N on the shuttlecraft. Both spacecraft are initially at rest. Explain how far does the starship move as it pulls the shuttlecraft aboard?
a flat sheet of paper of area 0.200 m2 is oriented so that the normal to the sheet is at an angle of 80deg to a uniform
Vector A ? has magnitude 10.0m m and vector B ? has magnitude 18.0m m . The scalar product A ? ?B ? is 90.0m 2. What is the magnitude of the vector product
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