Questions tagged 'Physics'
312 questions
Physics 1 Homework HELP!! its due in a hour?
A person places a cup of coffee on the roof of her car while she rushes back into the house to retrieve a forgotten item. When she returns to the car, she hops in and drives off with the coffee cup st...
Regardless of the frequency of the wave, all sound?
Which of the following is true about sound waves, regardless of their frequency? A. They travel with the same amount of energy through a given medium. B. They travel at the same speed through a given...
Nov 07, 2024
A cannonball shot with an initial velocity of 141 m/s at an angle of 45 degrees follows a parabolic path and ?
A cannonball is shot with an initial velocity of 141 m/s at an angle of 45 degrees, following a parabolic path. It hits a balloon at the peak of its trajectory. Neglecting air resistance, what is the...
Nov 07, 2024
A 747 jetliner lands and begins to slow to a stop as it moves along the runway. If its mass is 3.48×10^5 kg, i?
A Boeing 747 jetliner lands and begins to decelerate as it moves along the runway. Given that its mass is 3.48 × 10^5 kg, its initial speed is 25.2 m/s, and the net braking force acting on it is 4.30...
A certain shade of blue has a frequency of 7.11×10^14 Hz. What is the energy of exactly one photon of…?
A certain shade of blue has a frequency of 7.11 × 10^14 Hz. What is the energy of one photon of this light? I would greatly appreciate it if someone could help me work this out and explain the process...
Nov 06, 2024
Determine the speed of a marble (m = 8.66 g) with a wavelength of 3.46×10-21 pm.Express your answer to 3 significant figures. v =_____ m/s?
Determine the speed of a marble with a mass of 8.66 g and a wavelength of 3.46 × 10⁻²¹ pm. Please express your answer to three significant figures. What is the value of v in meters per second (m/s)?
Nov 05, 2024
How much work is required to stop an electron (m=9.11×10−31kg) which is moving with a speed of 2.10×106 m/s ?
How much work is required to stop an electron with a mass of 9.11 × 10⁻³¹ kg that is moving at a speed of 2.10 × 10⁶ m/s?
If the kinetic energy of the oscillating block on a spring is increasing, the block must be…?
Consider a harmonic oscillator at four different moments, labeled A, B, C, and D, as shown in the figure provided. Assume that the force constant ( k ), the mass of the block ( m ), and the amplitude...
help with a physics question-about a rollercoaster and its loop?
A block of mass ( m ) slides from rest on a frictionless loop-the-loop track, as illustrated in the diagram. What is the minimum release height, ( h_i ), required for the block to maintain contact wit...
How do the measurements of charge at the different locations on the sphere compare to each other?
How do the measurements of electric charge at different locations on the sphere compare to each other? A) The charge measurements are virtually the same at all locations on the sphere, except for the...