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A handball of mass 0.10 kg, traveling horizontally at 25 m/s, strikes a wall and rebounds at 19 m/s. What is the change in the momentum of the ball?
A stone is dropped from ayala bridge, if hte sound of the splash reaches the deck 3 seconds late. how high is the deck above water?assume that the sound travel is 342m/s
A cannon tilted upward at 24° fires a cannonball with a speed of 110 m/s. What is the component of the cannonball's velocity parallel to the ground?
how much force F_biceps must the biceps exert to hold a 650 g ball at the end of the forearm at distance d_ball = 33.0 cm from the elbow, with the forearm parallel to the floor? How much force F_elb
A carpenter places a board weighing 30 lb on the edge of the roof 24 ft above the ground. How much potential energy does the board have in relation to the ground?
the electric field on the surface of an irregular shaped conductor varies from 78.0 kN/C to 16. kN/C. calculate the local surface charge density at the point on the surface where the radius of curv
Assuming a surface temperature of 3.75°C, find the temperature (in Celsius) at a depth of 35.0 km (near the base of the crust). Ignore the heat generated by the presence of radioactive elements.
A tire placed on a balancing machine in a service station starts from rest and turns through 2.21 rev in 1.64 s before reaching its ?nal angular speed.
On an airless moon, you drop a golf ball of mass 106 g out of a skyscraper window. After it has fallen 125 meters, it is moving at 19.0 m/s. What is the rate of free fall acceleration on this moon?
A cylindrical glass of water (H2O) has a radius of 4.43 cm and a height of 12.5 cm. The density of water is 1.00 g/cm3. How many moles of water molecules are contained in the glass?
Three charges, q1, q2, and q3, are located at the corners of an equilateral triangle with side length of 1.55 m. Find the work done in each of the following cases:
A cart carrying a vertical missile launcher moves horizontally at a constant velocity of 30.0 to the right. It launches a rocket vertically upward. The missile has an initial vertical velocity of 4
Ignoring air resistance and assuming that the average angular speed of the baton is 2.00 rev/s, determine the height to which the center of the baton travels above the point of release.
Suppose that an event occurs in inertial frame S with coordinates x = 75 m, y = 18 m, z = 6.0 m at t = 2.0 10-5 s. The inertial frame S ' moves in the +x direction with v = 0.76c. The origins of S
The distances from the Sun at perihelion and aphelion for Mars are 2050·105 km and 2490·105 km, respectively. What is the ratio of Mars' orbital speed around the Sun at perihelion to
What is the potential difference across one wire of a 50 m extension cord made of 16 gauge copper wire carrying a current of 4 A
A barefoot field-goal kicker imparts a speed of 40 m/s to a football initially at rest. If the football has a mass of 0.43 kg and the time of contact with the ball is 0.029 s, what is the force exe
What is the electromagnetic flux coming from the surface of a 3000K blackbody(show work)
Drawing on Eratoshthenes' method, if two observers are due north and south of each other and are seperated by 400 km, what is the circumference of their spherical world if they see the same star on
A dog pulls on a pillow with a force of 7.4 N at an angle of 33.7? above the horizontal a) What is the x component of this force?
You need to construct a 400 pF capacitor for a science project. You plan to cut two L times L metal squares and place spacers between them. The thinnest spacers you have are 0.30 mm thick.What is th
A 61 kg astronaut floating at rest in space outside a space capsule throws his 0.50 kg hammer such that it moves with a speed of 13 m/s relative to the capsule. What happens to the astronaut?
You're driving down the highway late one night at 15 {rm m}/{rm s} when a deer steps onto the road 42 {rm m} in front of you. Your reaction time before stepping on the brakes is 0.50 {rm s}, and th
A gas is compressed from 4.5×10-2 m3 to 2.6×10-2 m3 at a constant pressure of 1.7×105 Pa. (a) What is the work associated with the process? Make sure to include the correct sign. (
a ferry boat is 4.0 m wide and 6.0 m long. when a truck pulls onto it, the boat sinks 4.0 cm in he water. what is the weight of the truck?