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Suppose a baseball hits fround at a distance of 164 meters exactly 7 seconds after it has been struck. Ignore friction. Find the maximum height, h, of the trajectory.
A cart traveling at 0.3 m/s collides with stationary object. After the collision, the cart rebounds in the opposite direction. The same cart again traveling at 0.3 m/s collides with a different stat
The bottom of a copper kettle has a 14.0 cm radius and is 2.0 mm thick. The temperature of the outside surface is 104°C, and the water inside the kettle is boiling at 1 atm of pressure. Find th
The metal wire carries a current of 89mA, how long does it take for 13e20 electrons to pass given cross-section area anywhere along the wire? The magnitude of the charge on an electron is 1.6e-19 C
The blue arrow in the diagram. The counterbalance w1 weighs 100 N. Determine the weight w2 and the angle α needed so that no force is exerted on the hip joint by the leg plus cast.
A Father pulls his sons across the sno on a sled. The children and sled together weigh 550N. The father pulls the sled with a force of 400N at an angle of 40 degrees above the horizontal. Neglectin
After impact,the block slides 7.5 m before coming to rest. If the coefficient of the kinetic fraction bet. Block and surface is 650, what was the speed of the bullet before impact?
A person pulls a toboggan for a distance of 30.0 m along the snow with a rope directed 25.0° above the snow. The tension in the rope is 98.0 N. How much work is done on the toboggan by the tensi
What is the time necessary for crossing if the hunter wishes to move neither upstream nor downstream whilst crossing the river?
The electric field strength is 5.00×104 inside a parallel-plate capacitor with a 2.0 spacing. A proton is released from rest at the positive plate.What is the proton's speed when it reaches th
A dish of lasagna is being heated in a microwave oven. The effective area of the lasagna that is exposed to the microwaves is 1.3 10-2 m2. The mass of the lasagna is 0.21 kg, and its specific heat c
She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makeks a quick stop in 1.9 seconds. What force was exerted to stop Suzie?
A 3.20 kg steel ball strikes a wall with a speed of 10.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.17
A student throws a set of keys vertically upward to her sorority sister, who is in a window 4.10 m above. With what initial velocity were the keys thrown?
A potential difference of 3.6×10-2 is developed across a 10-cm-long wire as it moves through a magnetic field at 5.0. The magnetic field is perpendicular to the axis of the wire.
A 51.0 crate, starting from rest, is pulled across a floor with a constant horizontal force of 250 . For the first 11.5 the floor is frictionless, and for the next 11.5 the coefficient of friction i
A cannonball launched with an initial velocity of 101 m/s at an angle of 50° follows a parabolic path and hits a balloon at the top of its trajectory. Neglecting air resistance, how fast is it g
How fast in rpm must a centrifuge rotate if a particle 8.50 cm from the axis of rotation is to experience an acceleration of 125,000 g's?
The front end of the car compresses and the driver comes to rest after traveling .78m. What was the average acceleration of the driver during the collision?
A 20 kg bullet moving horizontally at 400 m/s penetrates a 2.9 kg wood block resting on a horizontal surface. If the bullet slows down to 300 m/s after emerging from the block, what is the speed of
A string fixed at both ends is 8.36 m long and has a mass of 122g. It is subjected to a tension of 96.7 N and set vibrating. (a) What is the speed of the waves in the string? (b) What is the wavele
A 1500kg car rounds a corner with a radius of 25m. If the coefficient of frition between the tires and the pavement is 0.5, what is the maximum speed that the car can take the corner?
The student hears 5.0 beats per second. How fast is the student walking? Assume that the velocity of sound is 333.0 m/s.
A freight train has a mass of 2 multiplied by 107 kg. If the locomotive can exert a constant pull of 12.5 multiplied by 105 N, how long would it take to increase the speed of the train from rest to
Which kinematic variable or variables change with time, assuming that the position is measured from an origin at the center of the merry-go-round?