If the current carried by a conductor is doubled what happens to a)the charge carrier density b)the current density c)the electron drift velocity d)the average...

If the current carried by a conductor is doubled what happens to a)the charge carrier density b)the current density c)the electron drift velocity d)the average...

A baseball player hits a foul ball straight up in the air from a height of four feet off the ground. The initial velocity as the ball comes off the bat is 130 feet per second. The motion of ball can...

The range of a projectile fired at an angle theta with the horizontal and with an initial velocity of v0 feet per second is r = 1/32v0^2 sin 2theta, where r is measured in feet. Determine the expression...

At the bottom of the loop of your roller coaster, the velocity is 30 m/s and the radius of the loop is 50 m. Is the amount of acceleration riders will experience in this loop considered safe? Why...

Joe and his dog Freddie are in a park with Joe standing 60 feet due south of Freddie. Freddie starts to run due east and without stopping or changing direction, catches a ball thrown to him by Joe...

Blake stands in a canoe in the middle of a lake. The canoe is stationary. Blake holds an anchor with mass 15 kg, then throws it west with a speed of 8 m/s. Blake has a mass of 115 kg and the canoe...

The displacement of a particle in centimetres is given by y=8 sin (2πft). If f=20 Hz, find the displacement and the velocity of the particle at a time t=0.01 s and 0.07 s.

The displacement of a particle in centimetres is given by y=8 sin (2πft). If f=20 Hz, find the displacement and the velocity of the particle at a time t=0.01 s and 0.07 s.

Lincoln goes bungee jumping. He has a mass of 102 kg. a. After his jump, Lincoln hangs from the cord motionless, with the cord stretched by 15 m. What is the spring constant of the bungee...

A roller coaster car of mass of 300 kg is going through a loop at a velocity of 15 m/s. If the loop has a radius of 12 m, what centripetal force is the roller coaster experiencing? SHOW...

What is the minimum velocity required of a roller coaster at the top of a vertical loop with a radius of 7 m? SHOW ALL WORK PLEASE. May use if needed: Fc = Fn +...

How is momentum conserved in a collision? Explain using words, calculations, or both as well as physics terms.

Question: As the speed of a bicycle moving along a level horizontal surface changes from 2 m/s to 4 m/s, the magnitude of the bicycle's: Multiple Choice: a. total energy remains...

A coaster has a mass of 800 kg and a radius of 5m. What is the minimum speed required at the top of the track to ensure that the coaster does not leave the track? May use: Fc = Fn...

For an object whose velocity in ft/sec is given by v(t) = sin(t), what is its distance, in feet, travelled on the interval t = 1 to t = 5? 0.45 0.26 2.82 0...

A 70 kg student is riding a roller coaster and is at the top of the vertical loop. The loop has a radius of 16 m, and the car's velocity at the top is 12 m/s. What is the student's apparent weight...

The County Fair Swing carries the mass of riders and chairs in a circular path in a horizontal plane while suspended by cables or chains. Let's assume that: Each chair with riders is supported...

A particle is projected upwards from the top of a tower. Treat point of projection as origin & upwards as positive. Consider three point on its path such that at (s represents displacement...

"Ms. Powers can kick a soccer ball up into the air with an initial velocity of 44 feet per second. Using the formula h=vt-16t^2, where h=height above the ground, v=initial velocity, and t=time...

A city has streets laid out in a square grid, with each block 135 m long. If you drive north for three blocks, then west for two blocks, how far are you from your starting point?

Aaron C.

Computer Science/Biology Teacher

Jackson Heights, NY

Chiemeka E.

Statistics/Finance/Econometrics/SPSS/R/SAS/Calculus/STATA/Matlab/Atlas

Hollis, NY

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