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A ball is tossed from an upper-story window of a building. The ball is given an initial velocity of 7.70 m/s at an angle of 21.0° below the horizontal. Find the height from which the ball was th
The biggest asteroid (Asteroid 2005 YU55 400 m wide) to cruise by the Earth in 35 years made its closest approach on Tuesday November 11/08/2011 at 6:28 p.m. (PST). Find the acceleration and speed o
if the radius of the equipotential surface of a point charge is 10.5 m, what are the magnitude and sign of the point charge
Two positive point charges, each 12\mu C , lie along the x-axis at x = -0.10m and x = +0.10m. Find the electric field at the point (0, 0.25m ) on the y-axis
If 11.6 g of gold is deposited on the negative electrode of an electrolytic cell in a period of 3.03 hours, then what is the current through the cell during this period
Calculate the diameter of a 1.51 cm long tungsten filament in a lightbulb if its resistance is 0.507 ?
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 750 m, horizontal distance 19.8 km, What is the distance between the two aircraft
In a local bar, a customer slides an empty beer mug down the counter for a refill. The height of the counter is h. What was the direction of the mug's velocity just before it hit the floor
A golf ball is hit off a tee at the edge of a cliff. Its x and y coordinates as functions of time are given by x = 19.9t and y = 4.08t ? 4.53t2, obtain the expression for the acceleration vector as
A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 5.47 m/s. The car is a distance d away, What is the maximum possible value for d
A resistor with R = 9.08 ? resistance is connected to a real (i.e. non-ideal) battery, What is the electric current flowing in the circuit
A 150 kg rock (density is 2500 kg/m 3 ) is dropped to a lake. Determine how much force the man needs to life the rock from the bottom of the lake
the speed with which hair or fingernails grow. what is the average speed of growth? What units are most appropriate for describing this speed
"As a baseball is being caught, its speed goes from 30 to 0 m/s in about 0.005 s. Its mass is 0.145 kg. What is the baseball's acceleration in m/s2 and in g's
A ballplayer standing at homeplate hits a baseball that is caught by another player at the same height above the ground from which it was hit. How high will the ball rise
At t = 0, an automobile traveling north begins to make a turn. It follows one-quarter of the arc of a circle of radius 10.8 m until, Find the change in its velocity during the turn
skier who, starting from rest, reaches a speed of 5.04 m/s when going down a slope for 4.21 s, How far does the skier travel in this time
A runner runs 3.0 km, in a straight line, in 9.0 min and then takes 25 min to walk back to the starting point. What is the average speed for the whole trip
A pellet gun is fired straight downward from the edge of a cliff that is 14.5 m above the ground. How far above the cliff edge would the pellet have gone had the gun been fired straight upward
A Gaussian surface has thirty field lines leaving it when it surrounds a point charge of +10.0 and fifty-five field lines entering it when it surrounds an unknown point charge
A woman on a bridge 83.3 m high sees a raft floating at a constant speed on the river below. calculate the speed of the raft
A jogger accelerates from rest to 4.67 m/s in 3.48 s. A car accelerates from 19.0 to 32.7 m/s also in 3.48 s. Find the magnitude of the acceleration of the jogger
An Australian emu is running due north in a straight line at a speed of 13.0 m/s and slows down to a speed of 9.60 m/s in 4.20 s. What is the magnitude and direction of the bird's acceleration
The rectangle shown in Figure P3.57 has sides parallel to the x and y axes. Find the perimeter of the rectangle
A 6V battery is connected in series with a 1.5V flashlight. what possible terminal voltages are available