An automobile has a vertical antenna 1.40 m long. The automobile travels eastward at 65 km/h on a horizontal road where the Earth's magnetic field is 50.2

A 1450 kg cannon, which fires a 80 kg shell with a speed of 526 m/s relative to the muzzle, is set at an elevation angle of 39° above the horizontal. The cannon is mounted on frictionless rails, so that it recoils freely. What is the speed of the shell with respect to the Earth? At what angle with the ground is the shell projected?

Calculate the translational kinetic energy of Earth as it orbits the Sun once each year (the Earth

You are holding a shopping basket at the grocery store with two 0.68-kg cartons of cereal at the left end of the basket. The basket is 0.65m long.

Part A

Where should you place a 1.8-kg half gallon of milk, relative to the left end of the basket, so that the center of mass of your groceries is at the center of the basket?

Express your answer using two significant figures.

1)An outdoor circular fish pond has a diameter of 4.00 m and a uniform full depth of 1.40m . A fish halfway down in the pond and 0.70m from the near side can just see the full height of a 1.80m tall person.How far away from the edge of the pond is the person?

2)Two people stand 5.2m apart and 3.1m away from a large plane mirror in a dark room. At what angle of incidence should one of them shine a flashlight on the mirror so that the reflected beam directly strikes the other person?

3)A beam of light is incident on a plane mirror at an angle of 41? relative to the normal.What is the angle between the reflected ray and the surface of the mirror?

I would like to have the best explanation. I will appreciate all your hard work.

22. At what temperature do the atoms of argon (Ar) gas have the same rms speed as the molecules of oxygen (O2) gas at 25°C? The molar mass of oxygen is 15.9994 g/mol, and the molar mass of argon is 39.948 g/mol. ANSWER: 99ºC

29 A stone is dropped into a well. The sound of the splash is heard 3.5 s later. What is the depth of the well? Take the speed of sound in air to be 343 m/s. ANSWER h = 54.8m

Astronauts often see flashes when they are in space. How often these particles make their ways down to the Earth and hit us? What's the chance they hit our eyes and see flashes?

A hydrogen atom, initially at rest, absorbs an ultraviolet photon with a wavelength of λ=177.9nm.

Part A:

What is the atom's final speed if it now emits an identical photon in a direction that is perpendicular to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

Part B:

What is the atom's final speed if it now emits an identical photon in a direction that is opposite to the direction of motion of the original photon?

Express your answer to three significant figures and include appropriate units.

A boy on a bicycle moving with 10 m/s approaches a moving car with 5 m/s (both are moving in the same direction) as he sounds his horn at frequency 400.00 Hz. The sounds he hears reflected back from the car. Assume speed of sound is 340 m/s. Calculate the frequency the boy perceives.

What would be the answer plus a step by step guide on how you managed this problem?

Thank you.

1)

The suspension system of a 1800 kg automobile "sags" 9.6 cm when the chassis is placed on it. Also, the oscillation amplitude decreases by 46% each cycle. Estimate the values of (a) the spring constant k and (b) the damping constant b for the spring and shock absorber system of one wheel, assuming each wheel supports 450 kg.

2)

The function
x = (1.5 m) cos[(5πrad/s)t + π/4 rad]
gives the simple harmonic motion of a body. At t = 4.6 s, what are the (a) displacement, (b) velocity, (c) acceleration, and (d) phase of the motion? Also, what are the (e) frequency and (f) period of the motion?

A small steel ball bearing with a mass of 11.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.35 m. Calculate the horizontal distance the ball would travel if the same spring were aimed 27.0^o from the horizontal.

1. A generator has a 150-turn square coil, 5cm on a side.

Part A

Find the peak emf in this coil when it's rotating at 110Hz in Earth's field, B=5

electrons are ejected from a metallic surface with speeds ranging from 4.5 times ten to the -5 when light with a wavelength of 600 nm is used a) what is the work function of the surface? B) what is the cutoff frequency for the surface?

1. An electron at a museum travels at 0.99998c down a 3.2km long tunnel find γ first

a. How long will the trip take according to a clock in the control room?

b. How long will the trip take according to the electron’s internal clock?

c. What is the trip distance according to the electron?

please answer all parts of the question and make writing legible thank you