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1. A skateboarder moving at 6.15 m/s along a horizontal section of a track that is slanted upward by 46.9o above the horizontal at its end, which is 0.544 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track.
2. A tennis ball is struck and departs from the racket horizontally with a speed of 29.4 m/s. The ball hits the court at a horizontal distance of 20.7 m from the racket. How far above the court is the tennis ball when it leaves the racket?
3. A 51.8-g golf ball is driven from the tee with an initial speed of 56.7 m/s and rises to a height of 34.4 m.
(a) Neglect air resistance and determine the kinetic energy of the ball at its highest point.
(b) What is its speed when it is 8.43 m below its highest point?
An air-filled toroidal solenoid has a mean radius of 15.5cm and a cross-sectional area of 4.95cm2, How many turns does the winding have
What is an expression for , the position of mass I as a function of time? imagine that position is measured in meters and time is measured in seconds.
A square wire loop with sides 0.1 m and a current of 10 A is placed in a magnetic field of magnitude 0.1 T. What is magnetic dipole moment of the loop
What initial velocity (magnitude and direction) does the ball have relative to a person standing on the ground if the hot-airballoon is rising at 6.0 m/s relative to the ground during this throw
Two boxes are connected by a cord running over a pulley as shown in Fig. 4-7. Box I of mass 8.0 kg rest on the top of the table; Calculate the acceleration of the system
A gray kangaroo can bound across a flat stretch of ground with each jump carrying it 8.00m from the takeoff point. What is its horizontal speed
The solution to Bernoulli's equation, The construction of a flat rectangular roof (3.9 m x 4.3 m) allows it to withstand a maximum net outward force of 20050 N.
The resistance of a bagel toaster is 18 . To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
Xu is a new material discovered by a TA. The specific heat C and latent heat L of Xu are measured by heating up a piece of Xu sample. The temperature T (in K) of Xu sample varying as a function of heat Q (in 103 J) transferred to it.
A subway train starts from rest at a station and accelerates at a rate of 1.70m/s2 for 13.7s. What is the total distance covered
Draw a velocity-time graph for the motion and find acceleration of particle when travelling from A to B
A wild horse starts from rest and runs in a straight line 29°north of west. After 39 s of running in this direction, the horse has a speed of 13 m/s. What is the magnitude of the horse's average acceleration?
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