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Q1. An airplane maintains a speed of 567 km/h relative to the air it is flying through as it makes a trip to a city 745 km away to the north.
What time interval is required for the trip if the plane flies through a headwind blowing at 37.8 km/h toward the south?
Q2. A small circular hole 6 mm in diameter is cut in the side of a large water tank, 14.00 m below the water level in tank. The top of the tank is open to the air.
What is the speed of efflux?
What is the volume discharged per unit time.
What is lemmings kinetic energy
Dan is gliding on his skateboard at 2m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 7.00m/s (as measured by an observer on the ground). Dan's mass is 50 kg and the skateboard's mass is 5.00 kg.
A hollow cylinder of radius and height has a total charge uniformly distributed over its surface. The axis of the cylinder coincides with the z axis, and cylinder is centered at the origin.
A 3.20 kg block of wood sits on a table. A 2.50 g bullet, fired horizontally at a speed of 600 m/s, goes completely through the block, emerging at the speed of 180m/s. What is the speed of the block immediately after the bullet exits.
If you had been tasked to remove the water from New Orleans after Hurricane Katrina would you select a radial flow, mixed flow or axial flow pump for this purpose? Explain it briefly.
In adding, the snow exerts a retarding force on the sled that points opposite to the direction of motion, and has a magnitude of 57 N. Find out the acceleration of the sled and child.
A person exerts a horizontal force of F = 175 N in the test apparatus shown in the drawing. (h = 0.25 m.) Find the horizontal force M that his flexor muscle exerts on his forearm.
A curve of radius 50 m is banked for the design speed of 100 km/h. If the coefficient of static friction is 0.60 (wet pavement), at what range of speeds can a car safely create the curve.
How long does it take for the grinding wheel to stop ? Through how many radians has the wheel turned during the interval found in.
In a head-on collision, the car stops in 0.23 {rm s} from a speed of 17 {rm m}/{rm s}. The driver has a mass of 77 {rm kg}, and is, fortunately, tightly strapped into his seat. What force is applied to the driver by his seat belt during that fract..
Eight lights are connected in parallel to a 116 V source by two leads of total resistance 1.1. If 240 mA flows through each bulb, what is the resistance of each? What fraction of the total power is wasted in leads.
When he reaches equator, the sphere is rotating at how many rpm. A car takes 9 s to go from v = 0 to v = 55 m/s at about constant acceleration.
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