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A meteorite that has a mass equal to 30.8 tonne (1 tonne = 1000 kg) is exhibited in the American Museum of Natural History in New York City, Find the magnitude of the impulse experienced by the meteo
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.9g of copper, What diameter will you choose for your wire
An apple falls from a branch near the top of a tall tree. what is the apple's speed just before it hits the ground
An airfoil in a test chamber is exposed to air. Well ahead of the airfoil the pressure, temperature, and density are standard sea level conditions. Determine the velocity of the airflow
A low speed wind tunnel has an inlet cross sectional area of 2m2 and a test cross sectional area of 0.5m2. What is the inlet velocity
Air isn't a perfect electric insulator, but it has a very high resistivity of 3x10^13 omega*m. what fraction of the charge will flow across the air gap
A small object of mass 4.06 g and charge -16.5 µC is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground
what is the derivative of position as a function of time? what is the derivative of velocity as a function of time
The weight of the car is 14 kN. You know three points on the plane, What is the force of friction (Ff=?).
Assume you are a medieval knight attacking a castle with a cannon. The cannonball leaves the cannon with a speed of 40.7 m/s, What is the time of flight of the cannonball
Two 5.5 5.5 metal plates are separated by a 0.21--thick piece of Teflon. compute the maximum potential difference between the disks
A train moving with constant velocity travels 180north in 12 and an undetermined distance to the west. The speed of the train is 36 M/S^2. Find the direction of the train's motion relative to north
A 3 microcoulomb charge is at the coordinated (3,4)mm. A -4 microcoulomb charge is at the coordinates (-2,5)mm. find the Electric field vector in polar coordinates at the origin
In a mall, a shopper rides up an escalator between floors. At the top of the escalator, the shopper turns right and walks 11.72 m to a store. At what angle is the escalator inclined above the horizon
Consider a conical pendulum with a bob of mass m = 95.0 kg on a string of length L = 10.0 m that makes an angle of ? = 3.00° with the vertical. Determine the radial acceleration of the bob
A football game begins with a kickoff in which the ball travels a horizontal distance of 45 yd and lands on the ground. what is the initial speed of the ball in this case
A 0.30-kg particle has a speed of 2.0 m/s at point A and kinetic energy of 7.5 J at point B. What is the total work done on the particle as it moves from A to B
A ball thrown straight upward returns to its original level in 2.40. What is the initial speed of the second ball if it also returns to its original level in 2.40
An Earth satellite moves in a circular orbit 665 km above the Earth's surface. The period of the motion is 97.8 min. What is the magnitude of the centripetal acceleration of the satellite
A cat rides a merry-go-round while turning with uniform circular motion. At time t1 = 2.00 s, the cat's velocity is v1 = (3.50) + (4.00 m/s), find the magnitude of the cat's centripetal acceleration
After flying for 15 min in a wind blowing 42 km/h at an angle of22°south of east, What is the speed of the airplane relative to the air
A long, straight wire carries a current I1=3.8 A and is distance h=17.4 cm from a rectangular current loop that carries a current I2=1.8 A. DETERMINE the force exerted by the current loop on the wire
In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles, What is the magnitude of Betty's force
Nichrome wire of cross-sectional radius 0.758 mm is to be used in winding a heating coil. compute the length of the wire you must use to wind the coil?
The switch in a circuit has been open for a long time. The resistors in the circuit each have a value of 60 Ohms, find the total equivalent inductance of the circuit