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A 15,000 kg loader traveling east at 20 km/h turns south and travels at 25 km/h. Calculate the change in the loader's
(a) kinetic energy.
(b) linear momentum.
A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
A science student is riding on a flatcar of a train travelling along a straight horizontal track at a constant speed of 10.0 m/s. How high does she see the ball rise
A curling stone with a mass of 7 kg moves across the ice at a speed of 1.35 m/s in the positive x direction. What is the total momentum perpendicular to the x axis after the collision
A ceiling fan is turned on and a net torque of 2.2 N · m is applied to the blades. The blades have a total moment of inertia of 0.20 kg · m2
Different process for descending versus climbing stairs.
While looking into a silver Christmas ornament, If your nose is only 6.25 inches from the ornament, and the diameter of the ornament is 4.85 cm, how far behind the ornament does your nose appear
A 0.504 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger and comes to rest some distance above the plunger. The plastic tube has an inner radius of 7.07 mm, and is frictionles..
Two vectors have magnitudes of 10m and 15 m. The angle between themwhen they are drawn with their tails at the same point is65?. What is the component of the longer vector along the line of the shorter?
The construction of a flat rectangular roof (5.15 m × 7.44 m) allows it to withstand a maximum net outward force of of 2.33 × 104 N. At what wind speed will this roof blow outward
Water has a mass per mole of 18 g/mol,, and each water molecule has 10 electrons. what is the net charge of all these electrons
A straight 1.71 m long copper rod is moved perpendicularly across a uniform 0.90 T magnetic field. If a constant potentialdifference of 1.49 V appears across its end, how much time will ittake to traverse the 1.50 m long magnetic field region?
questiona. draw one diagram showing plan view footprint of the building and nearby obstacles and others showing the
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