Other Physics Answers

The city subway advances at 72k m/h and sounds a 330 Hz horn when passing through an intersection where there is a stationary observer. What are the frequencies of the sound the observer hears when the metro passes by?

the mass of Jupiter is 1.901x10²⁷ kg and its radius is 7.144x10⁷m. calculate the value of gravitational acceleration, g, on the surface of jupiter

A basketball player who is 2.0m tall is standing 10.0m away from the

basket. If he shoots the ball at 400 angle with the horizontal, at what

initial speed must he throw the ball so that it goes through the hoop

without striking the backboard? The height of the basket is 3.05 m

Shayna owns a jewel store. She handed you a golden-colored cube for you to buy it. Out of curiosity for the element, you search on the internet about geology and lookup gold in the material table and read that its density is 19.3 g/cm3. You measure the cube and find that it is 2 cm on each side, and weighs 40 g. What is its density? Is it gold?

A uniformly charge ring with radius R and having line charge density λ kept in xy plane

with its centre at origin. Find electric field intensity E, for this ring at a height L on z axis.

2. Shayna owns a jewel store. She handed you a golden-colored cube for you to buy it. Out of curiosity for the element, you search on the internet about geology and look up gold in the material table, and read that its density is 19.3 g/cm3. You measure the cube and find that it is 2 cm on each side, and weighs 40 g. What is its density? Is it gold?

3. What is the mass of a cylinder of lead that is 2.50 cm in diameter, and 5.50 cm long. The density of lead is 11.4 g/mL .

4. A barber raises his customer’s chair by applying a force of 150N to a hydraulic piston of area 0.01 m2. If the chair is attached to a piston of area 0.1 m2, how massive a customer can the chair raise? Assume the chair itself has a mass of 5 kg.

The resultant's magnitude (R) must be 8.2 meter.

The direction of the resultant is Θ = 56°. Determine the magnitude and direction of Levi’s overall displacement.