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Calculate the kinetic energy, the elastic potential energy, the gravitational potential energy, and the total mechanical energy (total energy) at (a) the point of release and (b) the equilibri
Two horizontal forces, 201 N and 180 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the crate.
A robot probe drops a camera off the rim of a 445 m high cliff on Mars, where the free-fall acceleration is 3.7 m/s2. Find the velocity with which it hits the ground.
Water at a gauge pressure of 3.0 atm at street level flows into an office building at a speed of .40 m/s through a pipe 5.0 cm in diameter. The pipe tapers down to 2.2 cm in diameter by the top floo
There is one point on the line between the two charges where the electric potential is equal to zero. What is the x-y components of this point?
The owner of the statue claims it is made of solid gold. When the statue is completely submerged in a container brimful water, the weight of the water that spills over the top and into a bucket is 1
A door 2.5 m high and 1.5 m wide has a mass of 15.0 kg. A hinge 0.35 m from the top and another hinge 0.35 m from the bottom each support half the door's weight. Assume that the center of gravity i
Capacitors C1 = 6.77 uF and C2 = 1.52 uF are charged as a parallel combination across a 212 V battery. The capacitors are disconnected from the battery and from each other. They are then connected
Bonnie and Clyde are sliding 460 {rm kg} bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 395 {rm N} of force while Bonnie pul
What should be the spring constant of a spring designed to bring a 1400 car to rest from a speed of 95 so that the occupants undergo a maximum acceleration of 5.0?
Draw free-body diagrams for when the ball is at the top of the circle and when the ball is at the bottom. Derive expressions for the tension F in the string when the ball is at the top of the circle
Take the coefficient of linear expansion for aluminum to be alpha = 2.40×10-5/rm{^{circ}C}.What is the temperature T of the Concorde's skin in flight?
State Bernoulli's principle. With the help of diagrams explain its application in the design of a carburetor and in the design of the body of an aeroplane.
Two students are on a balcony 18.3 m above the street. One student throws a ball, b1, vertically downward at 16.8 m/s. At the same instant, the other student throws a ball, b2, vertically upward at
A 1050 kg car carrying four 84 kg people travels over a rough "washboard" dirt road with corrugations 4.0 m apart which causes the car to bounce on its spring suspension. The car bounces with maxim
A box of books weighing 339 N is shoved across the floor by a force of 479 N exerted downward at an angle of 35° below the horizontal. What is the maximum coefficient of kinetic friction betwee
What is the acceleration experienced by the tip of the 2.1cm long seep second hand on your wrist watch?
A constant force of 100 n is applied to a mass of 40.0 kg. The force causes a displacement of 20.0 m to this mass along the + x axis. What is the work done by the component of the force along the +
A train 400 m long is moving on a straight track with a speed of 82.4 km/h. The engineer applies the brakes at a crossing, and later the last car passes the crossing with a speed of 16.4 km/h. Assu
A charge Q1 = -39.50 μC is fixed in place as shown in the diagram below. A second charge Q2 is attached to a massless string which makes an angle of 24° with respect to the vertical. Q2 is n
A toaster rated at 1020 W operates on a 120 V household circuit and a 4.00 m length of Nichrome wire as its heating element. The operating temperature of this element is 300°C. What is the cros
A charge moves a distance of 1.7 cm in the direction of a uniform electric field having a magnitude of 226 N/C. The electrical potential energy of the charge decreases by 14.9496 × 10-19 J as
A baseball pitcher can throw a ball with a speed of 70m/s . He is in the back of a pickup truck that is driving away from you. He throws the ball in your direction, and it floats toward you at a la
The Occupational Safety and Health Administration (OSHA) suggests a minimum coefficient of static friction of μs = 0.50 for floors. If Ethan, who has mass of 55 kg, stands passively, how much ho