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Water flows at 0.25{\rm L}/{\rm s} through a 12-m-long garden hose 2.0{\rm cm} in diameter that is lying flat on the ground. The temperature of the water is 20^\circ {\rm{C}}. What is the gauge pressure of the water where it enters the hose? Answer in Pa please
A sailboat is running along a straight course with the wind providing a constant force of 55 lb. The only other force acting on the boat is resistance as the boat moves through the water. The resisting force is numerically equal to five times the boa..
If friction and air resistance can be neglected, determine her speed vB when she reaches the horizontal end of the ramp at B.
A person fishing from a pier observes that five wave crests pass by in 7.4 s and estimates the distance between two successive crests to be 4.3 m. The timing starts with the first crest and ends with the fifth. What is the speed of the wave? m/s
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum charge on the dome
A car (m = 1610 kg) is parked on a road that rises 17° above the horizontal. What are the magnitudes of (a) the normal force and (b) the static frictional force that the ground exerts on the tires?
The resistance of a silver wire is to be calibrated for low-temperature measurements. A silver wire with a resistance of 1.15, what is the expected resistance of the silver wire at -196 °C
A woman on a bridge 104 m high sees a raft floating at a constant speed on the river below, She drops a stone from rest in an attempt to hit the raft, Find the speed of the raft
What will transform in terms of the observable properties of the black hole as this process continues
An 800 kHz radio signal is detected at a point 9.5 km distant from the transmitter tower. Find the average electromagnetic energy density
How far does the car go before it stops. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s.
Two blocks of masses m1 and m2 are connected by an ideal string passing over an ideal pulley. Find a relation between the variables that would guarantee that the block is initially slowing down
It takes a student t = 7.6 s to push a block m = 11 kg at a constant velocity over a distance of d = 8.2 m. Write an expression for the energy required to move the block along this path in terms of the variables provided
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