Questions tagged 'Physics'
312 questions
Calculate the proton’s initial kinetic energy.?
1) An infinitely long line of charge has a linear charge density of (5.50 \times 10^{-12} \, \text{C/m}). A proton, with a mass of (1.67 \times 10^{-27} \, \text{kg}) and a charge of (1.60 \times 10^{...
Help Physics Question!!!!!!!?
In the diagram provided, three ballot boxes are connected by cords, one of which passes over a pulley that has negligible friction at its axle and negligible mass. The masses of the boxes are as follo...
Oct 18, 2024
A room with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘C and 1.00 atm. The molar mass of oxygen is 32.0 g/mol.?
A room with dimensions 7.00 m × 8.00 m × 2.50 m is to be filled with pure oxygen at a temperature of 22.0 °C and a pressure of 1.00 atm. Given that the molar mass of oxygen is 32.0 g/mol, how many mol...
physics question! escape velocity???
The escape velocity from Planet A is double that of Planet B, and both planets have the same mass. What is the ratio of their radii, ( \frac{r_A}{r_B} )? Please provide the value for ( \frac{r_A}{r_B}...
Physics: Two ice skaters stand at rest in the center of an ice rink.?
Two ice skaters are resting at the center of an ice rink. When they push off against each other, the first skater, who weighs 70 kg, reaches a speed of 0.66 m/s. Meanwhile, the second skater accelerat...
Physics question on Capacitors?
Frequently, several capacitors are connected together to form a collection of capacitors. We may be interested in determining the overall capacitance of such a collection. The simplest configurations...
pls check my physics work (actually want to get it right so i won’t have to redo it again)?
An object has a gravitational potential energy of 750 joules while sitting on a shelf 3.0 meters above the ground. What is the object’s mass? I calculated it as: (750) / (3.0) = 250. However, I’m...
Oct 17, 2024
Physics question about collisions?
A 250 g ball collides with a wall. The accompanying figure illustrates the ball’s velocity and the force exerted on it by the wall (link to the figure: http://session.masteringphysics.com/problemAsset...
Oct 17, 2024
Calculate the field inside near the center.?
A thin solenoid measuring 14 cm in length has a total of 420 turns of wire and carries a current of 2.1 A. What is the magnetic field inside the solenoid near its center?
A hand exerciser utilizes a coiled spring?
Determine the force needed to compress the spring by 0.0508 m if a force of 89.0 N is required to compress the spring by 0.0191 m.