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A parallel-plate air capacitor is made from two plates 0.250 m square, spaced 0.900 cm apart. It is connected to a 120 V battery. A) If the battery is disconnected and then the plates are pulled apa
The electric field at the midpoint M between the charges has a magnitude EM. The field directly above the midpoint at point P has a magnitude EP. The ratio of these two field magnitudes is EM/EP = 1
An electric field of 210000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -6.2C at this spot?
In this case, the line breaks when the kinetic energy of the plane is 52.0 J. Find the magnitude of the charges.
As a result, each object experiences an electrostatic force that has a magnitude of 1.40 × 10^-20 N. How many electrons did it take to produce the charge on one of the objects?
The plane is in a 14 wind blowing toward the southwest relative to the earth. a-Letting x be east and y be north, find the components of vp/e (the velocity of the plane relative to the earth). b-Fin
At time t2 = 9.00 s, a half-revolution later, its velocity is v2 = (-5.50 m/s) + (-4.00 m/s) . a) What is the magnitude of the cat's centripetal acceleration
What are the components of the displacement vector from camp to summit? Choose the x axis east, y axis north, and z axis up. What is its magnitude?
Then security agents appear and the man runs as fast as he can back along the sidewalk to his starting point, taking 10.0 s. What is the ratio of the man's running speed to the sidewalk's speed? (ru
After flying for 15 min in a wind blowing 42 km/h at an angle of 28° south of east, an airplane pilot is over a town that is 48 km due north of the starting point. What is the speed of the airp
If the shot is made from a horizontal distance of 10.90m and must be accurate to +/- 0.22m (horizontally), what is the range of initial speeds allowed to make the basket?
A computer monitor accelerates electrons and directs them to the screen in order to create an image. If the accelerating plates are 1.55 apart, and have a potential difference of 2.50×104, wha
What must the charge (sign and magnitude) of a particle of mass 1.50N/C be for it to remain stationary when placed in a downward-directed electric field of magnitude 630 ? Use 9.81m/s^2 for the mag
The box has a mass of 23.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (a) Find the acceleration of the box.
A mass m1 = 5.7 kg rests on a frictionless table and connected by a massless string to another mass m2 = 3.8 kg. A force of magnitude F = 36.0 N pulls m1 to the left a distance d = 0.77 m. 1) How m
If a nearby building is the same height and 60m away, how far below the top of the building will the ball strike the nearby building?
A capacitor is charged to a potential of 12.0V and is then connected to a voltmeter having an internal resistance of 3.70M ohms . After a time of 4.20s the voltmeter reads 3.0V . What is the capacit
They pull on the asteroid with a force of 403 N. Initially the tug and the asteroid are at rest, 539 m apart. How much time does it take for the ship and the asteroid to meet?
The mass of the sky diver is 92.4 kg. Take upward to be the positive direction. What is his acceleration, including sign?
Find the (a) magnitude and (b) direction of the rocket's acceleration. Give the direction as an angle above the horizontal.
In one test, this gun accelerates a 3.7-kg projectile from rest to a speed of 4.7 × 103 m/s. The net force accelerating the projectile is 1.5 × 105 N. How much time is required for the pro
There is no friction between the box and the surface. Suppose that = +8.9 N and the mass of the box is 3.9 kg. Find the magnitude and direction of when the acceleration of the box is:
A boat has a mass of 7920 kg. Its engines generate a drive force of 3070 N due west, while the wind exerts a force of 780 N due east and the water exerts a resistive force of 1630 N due east. Take w
An Other Frame moves with a speed of 0.95 relative to the Home Frame. An object at rest in the Other Frame has a length of 30 ns as measured in the Home Frame. What is the object's length in the Oth