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if system A has 4 cycles/pulse and is operating at 5 MHZ and system B has 5 cycles/pulse and is operating at 10 MHZ, which system has the shorter pulse duration
what type of motion is occuring when the slope of a position vs time graph is zero, what type of motion is occuring when the slope of a position vs time graph is constant
Starting from one oasis, a camel walks 25 km in a direction 30 degrees south of west and then walks 30 km toward the north to a second oasis
A 12.0-g piece of Styrofoam carries a net charge of -0.746 µC and is suspended in equilibrium above the center of a large, What is the charge per unit area on the plastic sheet
A kicker punts a football from the very center of the field to the sideline 36 yards downfield. What is the direction of the net displacement of the ball
At the top of a cliff 100m high, Raoul throws a rock at a 30 degree angle with velocity 15.0 m/s. how far away from the bottom of the cliff should the first rock land
Betelgeuse has a radius R= 500R(sun) and a surface temperature of T= 2500 K and has an apparent magnitude of m=0.5. How far away is Betelgeuse in parsecs
A 140-m-wide river flows due east at a uniform speed of 3.9 m/s. A boat with a speed of 7.8 m/s relative to the water leaves the south bank pointed in a direction 39o west of north. How long does it
Two negative point charges are separated by 11.0cm and feel a mutual repulsive force of 1.85?N . The charge of one is three times that of the other. How much charge does each have? in nanocoulumbs
A steel sphere 3.0 cm in diamter has a mass of 0.11 kg. What is the mass of a steel sphere 5.0 cm in diameter
Eratosthenes measured the circumference of the Earth by noting that the Sun is at an angle of 7°12' = 7.2° ("one-fiftieth of a circle") south of the vertical in Alexandria at the same time o
An electric field of 10.6 N/C directed due north is superposed on an existing electric field of 15.3 N/C directed due east. What is the magnitude of the resultant field
If the initial speed of the block is increased to infinity, it turns out that the time taken for the block to come to a rest approaches a finite value whereas the distance traveled approaches infini
A very small call (m = 4 gms) hangs on a thread at an angle of ? = 30o. What is the strength of the electric field
You are to drive to an interview in another town, at a distance of 298 km on an expressway. What would be the least speed needed for the rest of the trip to arrive in time for the interview
A major leaguer hits a baseball so that it leaves the bat at a speed of 28.0m/s and at an angle of 34.6? above the horizontal. What is the direction of the baseball's velocity when it returns to the l
A source of sinusoidal electromagnetic waves radiates uniformly in all directions. What is the electric-field amplitude at a distance of 30.0cm from the source
A sinusoidal electromagnetic wave emitted by a cellular phone has a wavelength of 34.0cm and an electric-field amplitude of 4.30×10?2v/m at a distance of 200m from the antenna. Calculate
A sinusoidal electromagnetic wave from a radio station passes perpendicularly through an open window that has area of 0.600m^2. How much energy does this wave carry through the window
An experimental measurement has a result 7.95 +- 0.01, and a predicted value of 8.00. What is the percent uncertainty in the measurement
A boy throws up a ball 15m/s, how high will the ball go and what is the duration (total time) in the air from throw to catch
A stunt man drives a car at a speed of 20 m/s off a 24-m-high cliff. The road leading to the cliff is inclined upward at an angle of 20? How far from the base of the cliff does the car land
A small sphere of mass m= 7.60 g and a charge q1 = 29.9 nC is attracted to the end of a string, what is the smallest value d can have before the string breaks
A vector has components of 7.0 units along the x axis and 9.0 units along the y axis. What is the angle between the vector and the x axis
Raindrops fall 1500 m from a cloud to the ground. If they were not slowed by air resistance, how fast would the drops be moving