Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
Four identical masses of mass 900 each are placed at the corners of a square whose side lengths are 15.0. What is the magnitude of the net gravitational force on one of the masses, due to the other
A gun is fired and a 54 g bullet is accelerated to a muzzle speed of 120 m/s. If the length of the gun barrel is 0.60 m, what is the magnitude of the accelerating force? (Assume the acceleration to
What pressure? The Pressure exerted by the tires on the road, which is determined by (but is somewhat greater than) the Air pressure in its tires. Can you see how this relates to Home Project 1?
A proton, mass 1.67 × 10-27 kg, is projected horizontally midway between two parallel plates that are separated by 0.60 cm, with an electrical field with magnitude 940,000 N/C between the plat
What is the length of the shadow cast on the vertical screen by your 10.0 hand if it is held at an angle of 30 degrees above horizontal?
How many square meters of pv would it take to provide 1 kw for a world population of 6 billion? if these cells were crystalline silicon of 200 microns thick, what is the minimum mass of silicon mate
Using a conventional two-slit apparatus and light that has a 581 nm wavelength, 24 bright fringes per centimeter are observed near the center of a screen 2.80 m away. What is the slit separation?
a uniformly charged insulating rod of length 14.0cm is bent into the shape of a semicircle. The rod has a total charge of -7.50 mc. Find the magnitude and direction of the electric field at O. the c
Outcome seems more likely than finding a means to reduce the naive estimate by precisely 55 orders of magnitude or more. Yet, if the dark energy is not quantum vacuum energy, what is it?
A toroidal solenoid with 540 turns is wound on a ring with a mean radius of 2.85 cm. Find the current in the winding that is required to set up a magnetic field of 0.330 T in the ring if the ring i
Two particles are fixed to an x axis: particle 1 of charge q1 = +1.1 10-8 C at x = 20 cm and particle 2 of charge q2 = -4.50q1 at x = 70 cm. At what coordinate on the axis is the net electric field
Hardware development projects in Urbana are typically done by 2-4 people. Data analyses are typically performed by groups of 2-4 people. What Do Students Do?
The hydrogen molecular ion {rm H_2^1}, with one electron and two protons, is the simplest molecule. The equilibrium spacing between the protons is 0.11 {rm nm}. Suppose the electron is at the midpoi
An artillery shell is fired with an initial velocity of 300 m/s at 48.5° above the horizontal. To clear an avalanche, it explodes on a mountainside 38.0 s after firing. What are the x and y comp
An asteroid is discovered heading straight toward Earth at 14km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 minutes, after which the as
A 5 kg block is on a horizontal surface, with which it has a coefficient of kinetic friction of 0.45 . This block is connected, by a massless, non-stretching string, over a massless, frictionless pu
At the frequency you labeled, will the value of the peak current, Imax, in the circuit be a maximum or minimum? What about the value of the peak voltage, Vmax, across the resistor?
A uniform rod of length 0.900 m and mass 19.5 kg is balanced on a sharp edge at 0.660 m from the left end. At the left end hangs a mass of 30.0 kg and the right end hangs an unknown mass so that th
A cart is propelled over an xy plane with acceleration components ax = 4.5 m/s2 and ay = -1.5 m/s2. Its initial velocity has components v0x = 9.8 m/s and v0y = 13.7 m/s. In unit-vector notation, wha
It collides with and sticks to the spring, which is compressed by 2.5 cm in bringing the block to a momentary halt. Assuming air resistance is negligible, from what height (in cm) above the compress
The upright image of your face is 40.0 cm away from you. The image has a magnification of 1.50. (a) How far away are you from the mirror? (b) What is the radius of curvature?
A child slides down a slide with a 30° incline, and at the bottom her speed is precisely two-thirds what it would have been if the slide had been frictionless. Calculate the coefficient of kinet
Calculate the magnitude of the gravitational force exerted by the human on Mercury. N For comparison, calculate the approximate magnitude of the gravitational force of this human on a similar human.
An infinitely long line of charge has linear charge density 5.00 10-12 C/m. A proton (mass 1.67 10-27 kg, charge +1.60 10-19 C) is 18.0 cm from the line and moving directly toward the line at 1.50 1
A ceiling fan with 89 cm diameter blades is turning at 61rpm. Suppose the fan coasts to a stop 26s after being turned off. What is the speed of the tip of a blade 10 after the fan is turned off? Throu