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A bullet is fired from a rifle that is held 1.59 m above the ground in a horizontal position. The initial speed of the bullet is 1097 m/s. Calculate the time it takes for the bullet to strike the gr
A ceramic coffee cup with m=0.113 kg and ccup=1090 J/(kg.°K) is initially at room temperature (24°C). If 225 g of 80.3°C coffee and 12.2 g of 5°C cream are added to the cup, what is
During a circus performance, a 74.9-kg human cannonball is shot out of an 18.6-m-long cannon. If the human cannonball spends 0.865 s in the cannon, determine the average net force exerted on him in
One gives the craft an acceleration in the x direction of ax = 5.13 m/s2, while the other produces an acceleration in the y direction of ay = 7.28 m/s2. At the end of the firing period, the craft ha
At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height difference between the two climbers?
A 2 Kg block is pushed from rest on a horizontal friction-less table at an angle of 37 degrees by a force of 15N. Find the acceleration of the block. Please explain with step by step solution.
After the RCS thruster is turned off, find (a) the magnitude and (b) the direction of the vehicle's velocity relative to the space station. Express the direction as an angle (in degrees) measured fr
The ball leaves the club at a speed of 17.7 m/s at an angle of 36.0? above the horizontal. It rises to its maximum height and then falls down to the green. Ignoring air resistance, find the speed of
(a) Determine the magnitude of her acceleration, assumed to be constant. (b) If the ramp is inclined at 27.9 ° with respect to the ground, what is the component of her acceleration that is paral
The ball remains in contact with the kicker's foot for 0.0593 s, during which time it experiences an acceleration of 445 m/s2. The ball is launched at an angle of 48.2° above the ground. Determi
Compute the fan's angular velocity magnitude after time 0.199 has passed. Express your answer numerically in revolutions per second. I figured out a and got .467 rev/s and i know thats correct.
As it orbits the Earth, the 11,000-kg Hubble Space Telescope travels at a speed of 7,900 m/s and is 560,000 m above the Earth's surface.
A penny is placed at the outer edge of a disk (radius = 0.124 m) that rotates about an axis perpendicular to the plane of the disk at its center. The period of the rotation is 1.73 s. Find the minim
A speed skater goes around a turn that has a radius of 26 m. The skater has a speed of 14 m/s and experiences a centripetal force of 480 N. What is the mass of the skater?
At one instant the outer wall moves at a speed of 2.78 m/s, and an 64.7-kg person feels a 209-N force pressing against his back. What is the radius of a chamber?
A small pumpkin is launched from a very versatile catapult at a variety of speeds and angles. Rank each of the following trials by the maximum height reached by the pumpkin. (1=highest) Consider air
A point charge Q = +4.40 µC is held fixed at the origin. A second point charge q = +2.0 µC with mass of 2.80 10-4 kg is placed on the x-axis, 0.250 m from the origin.
For instance, as a car is going through a turn, a speed of 99.5 m/s and centripetal acceleration of 2.51 g (2.51 times the acceleration due to gravity) are displayed. Determine the radius of the tur
A car travels at a constant speed around a circular track whose radius is 2.70 km. The car goes once around the track in 226 s. What is the magnitude of the centripetal acceleration of the car?
A jet plane has a takeoff speed of vto = 74 m/s and can move along the runway at an average acceleration of 2.0 m/s2. If the length of the runway is 2.1 km, will the plane be able to use this runway
After it has moved 8.00 cm, the additional force has done 6.85 x 10-5 J of work and the particle has 4.35 x 10-5 J of kinetic energy. (a) What work was done by the electric force?
A charge of 35.0 nC is placed in a uniform electric field that is directed vertically upward and that has a magnitude of 4.00 104 V/m. (a) What work is done by the electric force when the charge mov
If you disconnect the battery and separate the plates to a distance of 3.50 cm without discharging them, what will be the potential difference between them? Express your answer with the appropriate
The plates are 0.700mm apart. What is the potential difference between the plates? What is the area of each plate? What is the electric-field magnitude between the plates? What is the surface charge