Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
But from the faucet to the outlet the water is all moving at the same speed since the hose is uniform in size. Why does the pressure decrease from faucet to outlet where the speed is all the same?
A golfer uses a club to hit a 45-g golf ball resting on an elevated tee so that the golf ball leaves the tee at a horizontal speed of +38m/s. A.) what is the impulse on the golf ball?
A 0.40 kg billiard ball traveling at a speed of 16 m/s strikes the side rail of a pool table at an angle of 60° (Fig. 6.26). If the ball rebounds at the same speed and angle, what is the change
A loudspeaker at the origin emits sound waves on a day when the speed of sound is 340 m/s. A crest of the wave simultaneously passes listeners at the (x, y) coordinates (38 m, 0 m) and ( 0 m, 27 m).
Three point charges lie along a straight line, where q1= 6.00µC, q2 = 1.50µC, and q3 = -2.00µC. The separation distances are d1 = 3.00 cm and d2 = 2.00 cm. Calculate the magnitude
Tyler dropped a water balloon out of a dorm window that is 12 m above where a teacher is walking. What is the speed of the water balloon when it hits the teacher walking below?
Mercedes, an astrononaut on the moon, holds a 2.5 kg bowling ball over her head 3.2 m above the surface of the moon, what is the potential energy of the bowling ball?
A diverging lens with focal length, f=-31.5 cm is placed 14.0 cm behind a converging lens with f= 20.0 cm. What is the image's
a. If you push a lawn mower across a yard in 10 seconds, how does the work done compare with pushing it across the same yard in 20 seconds? Explain why.
Calculate the torque on the center of mass of the rod alone with respect to the pivot point.
The magnitude of the force that a spring exerts (F) when it is stretched a distance x from its unstressed length is governed by Hooke's law, F = kx. (a) What are the dimensions of the force constant
1. What accounts for an increase in the temperature of a gas that is kept at constant volume?
A tall cylinder with a cross-sectional area 12.0 cm² is partially filled with mercury; the surface of the mercury is 5.00 cm above the bottome of the cylinder. Water is slowly poured in on top
Two identical cars hit each other and lock bumpers. In each of the following cases, what are the speeds of the cars immediately after coupling bumpers? (a) a car moving with a speed of 90 km/h appro
A fire hose exerts a force on the person holding it. This is because the water accelerates as it goes from the hose through the nozzle.
A single conservative force acts on a 5.00 kg particle. The equation Fx = (2x + 4) N describes this force, where x is in meters. As the particle moves along the x axis from x = 2.20 m to x = 6.20 m
The ball is released. Assuming that it rolls without slipping on the plane, what is the horizontal acceleration of the plane?
Draw a free-body diagram for one of the pith balls and clearly label all forces with magnitude and direction. Assuming the pith balls are equally charged, what is the charge on each ball? A numerica
Find the rate of energy transfer by conduction through the window when the temperature of the inside surface of the glass is 70°F and the outside temperature is 90°F.
A frictionless stick of mass m and length L lies at rest on a frictionless horizontal table. A mass km (where k is some number) moves with speed v0 at a 45 degree angle to the stick and collides ela
The system is released from rest. If there is no slipping between any of the surfaces, what is the acceleration of the board? Use conservation of energy.
A train pulls away from a station with a constant acceleration of 0.49 m/s2. A passenger arrives at the track 5.0 s after the end of the train passed the very same point. What is the slowest constan
Suppose the wind speed in a hurricane is 107 mph. (a) Find the difference in air pressure (Pa) outside a home and inside a home (where the wind speed is zero).
A metallic sphere has a charge of +3.8 nC. A negatively charged rod has a charge of -6.0 nC. When the rod touches the sphere, 7.9 109 electrons are transferred. What are the charges of the sphere a
A car horn emits a frequency of 400 Hz. A car traveling at 20.0 m/s sounds the horn as it approaches a stationary pedestrian. What frequency does the pedestrian hear? The speed of sound in air is 3