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1. Suppose you roll a ball off a tabletop. Will the time to hit the floor depend on the speed of the ball? ( Will a fast ball take a longer time to hit the floor?) Defend your answer.
2. Fragments of fireworks beautifully illuminate the night sky. ( a) What specific path is ideally traced by each fragment? ( b) What paths would the fragments trace in a gravity- free region?
3. The hang time of a basketball player who jumps a vertical distance of 2 feet ( 0.6 m) is about What will be the hang time if the player reaches the same height while jumping 4 feet ( 1.2 m) horizontally?
4. Why are satellites normally sent into orbit by firing them in an easterly direction, the direction in which Earth spins?
5. Which requires less fuel, launching a rocket to escape speed from the Moon or from Earth? Defend your answer.
Needing help, secretary of the United States Department of Agriculture asked your teacher, "If a chicken and a half can lay an egg and a half in a day and a half, how many days will it takes three chickens to lay twenty eggs".
A computer draws an rms current of 2.70 Aat an rms voltage of 120 V. The average power consumption is279 W. What is the phase difference between the voltage andcurrent?
You are driving east on 8th Street (Tamiami Trail) at a speed of 31. In the rearview mirror, What is the frequency of the siren
A single force acts on a particle-like object of mass m kg in such a way that the position of the object as a function of time is given by x = 3t - 4t2 + t3, Find the work done on the object by the force between t = 0 and time t
After the first snow of the winter, you and your friends go sledding on the Tecumseh Street overpass of I-35. If the snow is frictionless, the length of the hill is 23 meters, and the angle of the hill is 40 degrees from the horizontal, how fast will..
Two objects are separated by a distance of 8 cm. Each is charged with the same magnitude (absolute value) of charge. What is the magnitude of the charge of each of the objects
q1. a container holds a gas consisting of 1.76 moles of oxygen molecules. one in a million of these molecules have lost
A step-down transformer is used for recharging the batteries of portable devices. find the power delivered to the CD player
A human being can be electrocuted if a current as small as 51 mA passes near the heart. An electrician working with sweaty hands makes good contact with the two conductors he is holding. If his resistance is 1600 Ω, what might the fatal voltage in vo..
Two parallel circularrings of radius R=1 m have their centers on the x-axis separated bya distance of 2 m. What is the net electric field in the center of the right ring
Assume that the partner moves on a circle that has a radius of 6.50 m. At a swinging speed of 4.45 m/s, what force must the man apply to his partner in the straight-down position?
A 200-Volt battery is connected to a parallel-plate capacitor that has a dielectric slab (k= 2) filling the space between the plates. The plates are 10cm x 10cm and are 3mm apart.
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