Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
A semicircle of radius a is in the first and second quadrants, What is the direction of the net electric field at the origin produced by this distribution of charge (+x,-x,+y,-y direction)
A parallel-plate capacitor is formed from two circular 20-cm-diameter plates spaced 1.0 mm apart. What is the charge (in nC) on the positive plate
Suppose a 0.3 kg mass on a spring tha has been compressed 0.10m has elastic potential energy of 1 J. What is the spring constant? Also, how much further must the spring be compressed to triple the e
The electric field at a point in space is E? =( 600i^+ 600 j^)N/C. What is the magnitude of the proton's acceleration
Point charges located at 3, 8, and 11 cm along the x - axis are represented in the figure (at 3cm +q, 8cm -2q, 11cm +q). What is the magnitude of the force on the charge
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. What is the maximum height the blue ball reaches
10-nC point charge is located at the center of a thin spherical shell of radius 8.0 cm carrying -20 nC distributed uniformly over its surface. What is the magnitude of the electric field 2.0 cm from
Two small plastic spheres each have a mass of 1.2g and a charge of -55.0nC . They are placed 2.6cm apart (center to center). find the magnitude of the electric force on each sphere
Two spherical objects with a mass of 5.35 kg each are placed at a distance of 2.35 m apart. How many electrons need to leave each object
A hot-air balloon is rising upward with a constant speed of 2.68 m/s. When the balloon is 5.62 m above the ground, How much time elapses before the compass hits the ground
three point charges are arranged in a equilateral triangle of side a= m. Sketch the field lines due to + Q and -Q, What is the x-component of the force
A spring-loaded cannon aimed at 47 deg. above the horizontal is on the last car of a long train of flat cars. How far from the cannon on the train does the projectile land
On a hot summer day, a young girl swings on a rope above the local swimming hole. how high above the water was she when she let go of the rope
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. The hare accelerates uniformly at a rate of 0.9 m/s2 for 4.5 seconds. What is the acceleration of th
A red ball is thrown down with an initial speed of 1 m/s from a height of 27 meters above the ground. How long does it take the red ball to reach the ground
A blue ball is thrown upward with an initial speed of 23.2 m/s, from a height of 0.7 meters above the ground. 2.8 seconds after the blue ball is thrown, What is the speed of the blue ball when it re
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. What is the total time the blue car is moving
Three 18-cm-long rods form an equilateral triangle. find the electric field strength at the center of the triangle
In a marathon race, Chad is out in front, running due north at a speed of 3.95 m/s. John is 92 m behind him, running due north at a speed of 4.53 m/s. How long does it take for John to pass Chad
A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. find the speed of the ball just before it lands
A horizontal rifle is fired at a bull's-eye. The muzzle speed of the bullet is 655 m/s. What is the horizontal distance between the end of the rifle and the bull's-eye
A small block with mass .2kg is released from rest at the top of a frictionless incline. how far down the incline does it travel in 2s
A skateboarder shoots off a ramp with a velocity of 6.4 m/s, directed at an angle of 62° above the horizontal. How high above the ground is the highest point that the skateboarder reaches
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 22.0 m/s. find the force he exerts on the ball to give it this upward speed
Two tiny spheres of mass 6.80 mg carry charges of equal magnitude, 72.0 nC, but opposite sign. Which ball (the one on the right or the one on the left ) has positive charge ? What is the magnitude E o