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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
During this time, the vertical speed increases from zero to 24.0 m/s, while the horizontal speed increases from 80.0 m/s to 98.0 m/s. What is the net vertical force on the airplane as it levels off?
It slides while being pushed by the wind with a force of 0.35 N directed along the positive y-axis. Calculate the magnitude of the penguin's velocity at t = 9.95 s.
Two forces F1 and F2 are acting on a mass M = 5kg. The force F1 = 7i + 6j + 2k, in N. The acceleration of the mass is given by a = 2i + 7j + 5k, in m/s^2. Calculate the magnitude of F2.
When a match is lit the air surrounding it is ionized creating charged particles. Are these charged particles positive, negative, or both? explain?
Calculate the electric potential energy of the adenine-thymine bond, using the, and the combinations of molecules.
A football is kicked at ground level with a speed of 16.6m/s at an angle of 42.9 to the horizontal. How much later does it hit the ground?
An electron is circling around the nucleus of a hydrogen atom at a radius of 0.05 nm. Determine the angular velocity an the time period of the electron
Under the same assumptions, write an expression for the acceleration, a2, the block of mass m2 experiences in the y direction. Your answer should be in terms of the tension, T, and m2.
A helium nucleus has radius rHe = 1.9 fm, mass m = 6.6 × 10-27 kg, and charge +2e. A gold nucleus has charge +87e and radius rAu = 7.0 fm. What initial speed must a helium nucleus have if it
If only one particle is released from rest, while the other three remain stationary at the three other corners of the square, what is the final speed of the released particle once it is very far fro
In a chase scene, a movie stuntman runs horizontally off of one building and lands on another 1 m higher. If the gap between the buildings is 4.5 m wide. At what angle must he jump at to make it?
What is the critical angle for total internal reflection in a diamond when the diamond is in air, immersed in water the refractive indices of air diamond and water are 1.0, 2.42 and 1.33.