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# Find its time of flight?

A shell was fired from ground level with an initial speed of 350 m/s at an angle of 30 degrees to the horizontal. Assuming there is no air resistance, calculate:   a) its time of flight; b)...

# What is the velocity?

A bicycle accelerates from rest at 0.50 m/s^2. What is the velocity of the bicycle after 6.0 s?

# A sock stuck to the side of a clothes-dryer barrel has a centripetal acceleration of 28 m/s2.

A sock stuck to the side of a clothes-dryer barrel has a centripetal acceleration of 28 m/s2. If the dryer barrel has a radius of 27.6 cm, what is the tangential speed of the sock?   Can...

# Two objects with masses of 1.00 kg and 6.00 kg are connected by a light string that passes over a frictionless pulley.

Two objects with masses of 1.00 kg and 6.00 kg are connected by a light string that passes over a frictionless pulley. (a) Determine the tension in the string. (b) Determine the...

# Physics Question (Too big to fit in this box)

Two blocks on a frictionless horizontal surface are connected by a light string, where m1 = 11 kg and m2 = 22 kg. A force of 80 N is applied to the 22 kg block. (a) Determine the acceleration...

# physics buoyant

a styrofoam ball is attached to the bottom of a swimming pool with a nylon cord.  the cord is 1.20 m long and the pool is 3.3 m.  diameter of ball is 46cm. density of styroforam is 0.3 g/cc...

# Differential Equations circuit homework problem

Attached is the problem from my text book. I'm confused about what I'm actually solving and how to use what I know. I know that Current for the inductor is given by the equation di/dt = v/L and the...

# sound and musical sound

distinguish between noise and music

# A dummy is fired vertically upward from a cannon with a speed of 40 m/s. How long is the dummy in the air? What is the dummy's maximum height?

A dummy is fired vertically upward from a cannon with a speed of 40 m/s. How long is the dummy in the air? What is the dummy's maximum height? sdsdsdsdsdsdsdsdsdsd

# Physics Help

A heat pump is used to keep a house warm at 22 degrees Celsius.   (a) How much work is required of the pump to deliver 2900 J of heat into the house if the outdoor temperature is 0 degrees...

# Physics Question

The value of specific heat for copper is 390 J/kg⋅C°, for aluminum is 900 J/kg⋅C°, and for water is 4186 J/kg⋅C°.   (a) What will be the equilibrium temperature in degrees Celsius when...

# Physics Question

A 10-g sample of a cookie is allowed to dry before putting it in a bomb calorimeter. The aluminum bomb has a mass of 0.615 kg and is placed in 2.00 kg of water contained in an aluminum calorimeter...

# Urgent! Physics Help!

1. A fireworks shell explodes H=110 m above the ground, creating colorful sparks. How much greater is the sound level of the explosion for a person at a point directly below the explosion than for...

# Physics Question

1. A fireworks shell explodes H=110 m above the ground, creating colorful sparks. How much greater is the sound level of the explosion for a person at a point directly below the explosion than for...

# One of the geo-stationary satellites of India is vertically above

A. New Delhi B. Mumbai C. Allahabad D. None of these

# Calculating force

At a building site, an iron girder of mass 400 kg is suspended from a crane by a steel cable. Assume that the cable has a circular cross-section of diameter 24 mm. a.What is the tensile force...

# Physics Questions

1. A string is under a tension of 750.0 N. A 1.7 m length of the string has a mass of 4.8 grams. What is the speed of a transverse wave of wavelength 0.50 m in this string? What is the frequency of...

# How can light have momentum?

So, I have been watching a lot of videos on physics, and a few of them have eluded to the fact that light has momentum. For instance, minutephysics video "E=MC2" is incomplete states that...

# Physics-Specific Heat and Heat of Fusion

1. Given that the specific heat of water is 1.00 cal/(g*C), what is the specific heat in Joules/(kg*K)?   2. If 700 grams of a metal requires 95 calories of energy to raise its temperature...

# Physics Questions

Assume the speed of sound is 331 m/s.   1. You have an open tube that is 1.3 m long. a. What is the fundamental frequency and wavelength of the tube? b. What is the third harmonic...