Physics!

73,661 results, page 98

physics

A brick dropped from a roof hits the ground 3.29 seconds later. How high (in m) was the roof?

physics

What is the average velocity in the following cases? You run 77.9 m West at 2.67 m/s then walk for 133 s at 8.78 m/s West.

physics

What is the average velocity in the following cases? You run 77.9 m West at 2.67 m/s then walk for 133 s at 8.78 m/s West.

physics

How much heat is necessary to change 500g of ice at-10 celsius to water at 20 celsius?

physics

what is a satellite's altitude above the surface of the earth if earth's mass is 5.98*10^24 kg and its radius is 6380 km?

physics

A football is kicked 66.6 meters. If the ball is in the air for 5.39 seconds, with what initial velocity was it kicked?

physics

A 1400 kg car takes a 50 m unbanked curve at 14 m/s. What is the size of the friction force on the car?

physics

Why is more impulse delivered during a collision when bouncing occurs than during one when it doesn't?

physics

John runs at 4.6 m/s for 7.53 s along the x axis. How far does John run? Answer in units of m

physics

A hydrogen atom has a diameter of about 10.1 nm. Express this diameter in meters, millimeters, and micrometers.

physics

A human hair is approximately 55 µm in diameter. Express this diameter in meters. Answer in units of m

physics

You drive a car for 2.0 h at 35 km/h, then for another 2.0 h at 64 km/h. (a) What is your average velocity? (b) What is your answer if instead you drive 99 km at each of the two speeds?

physics

You drive a car for 2.0 h at 35 km/h, then for another 2.0 h at 64 km/h. (a) What is your average velocity? (b) What is your answer if instead you drive 99 km at each of the two speeds?

Physics HELP!!

A 4165.0kg truck is parked on a 15.8deg slope. What is the friction force on the truck?

Physics

A stone is released from an elevator going up with accelaration 'a' . The acceleration of the stone after release is ?

Physics

An arrow is shot at an angle 36 of with the horizontal. It has a velocity of 47 m/s. How high will the arrow go? The acceleration of gravity is 9.8 m/s

Physics

a 14.0 N·m torque on a wheel causes angular acceleration 11.3 rad/s2, what is the wheel's rotational inertia?

Physics

If a sonar echo takes 2.20 seconds to return from a whale, how faw away is the whale?

physics

If you drop a 4 pound watermelon and a 2 pound cabbage the same distance, in a vacuum, what will happen?

Physics

A driver approaches an intersection at a speed of 50km/h, when the light turns amber. The driver

Physics

How much energy is released by 10 kg of liquid silver at 961°C as it cools to solid silver at 20°C?

physics

The net external force on the propeller of a 3.9 kg model airplane is 6.8 N forward. What is the acceleration of the airplane?

physics

The net external force on the propeller of a 3.9 kg model airplane is 6.8 N forward. What is the acceleration of the airplane?

Physics

Find the gravitational force exerted by a 0.525 kg mass on a 0.109 kg mass 2.04 m away.

Physics

crane lifts a 75 kg girder 8.85 m. How much work does the crane do lifting with an upward acceleration of 1.20 m/s ^2?

Physics

An engine does 15kJ of work while rejecting 37 kJ to the cold reservoir. What is the efficiency of the engine?

Physics

An engine does 15kJ of work while rejecting 37 kJ to the cold reservoir. What is the efficiency of the engine?

Physics

A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?

Physics

How do you determine the displacement of a graph with lots of areas of displacement, do you add them all together?

Physics

How do you determine the displacement of a graph with lots of areas of displacement, do you add them all together?

Physics

A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?

physics

A 75 particle is moving to the left at 29 . How much work must be done on the particle to cause it to move to the right at 46 ?

Physics

12 volts is applied across a 4 ohm resistor. How much power is dissipated by the resistor?

Physics

A car is traveling at 10 m/s. By what factor does the car's kinetic energy increase if its speed is doubled to 20 m/s?

Physics

An elevator lifts a total mass of 1.1 x 10^3 kg, a distance of 40 m in 12.5s. How much power does the elevator demonstrate?

Honors Physics

If the potential energy is 1962000 what is the kinetic energy of a boulder weighing 200 kg

physics

a baseball has a mass of .145 kilograms. If the acceleration die to gravity is 9.8m/s, what is the weight of the baseball

physics

a series RLC circuit is composed of a 6.00-mH inductor and a 2.50-uF capacitor. what is the resonant frequency of this circuit?

Physics

A motorist travels 1600 m at 80 m/s and 750 m at 100 m/s. What is the average speed of the motorist for this trip.

physics

A bobcat jumps with a speed of 5m/s at an angle of 55 degrees. How long does the bobcat stay in the air?

physics

the volume of 50g of a substance is 20 cm^2 if the density of water is 1 g cm^-1 will the object floats or sinks in water.???

Physics-Momentum

Baseball 0.14 kg moving at 35 m/s. Momentum of the ball? this should be easy b/c i know p=m*v but i get 4.9 kgm/s and it's wrong.....

physics

two forces of 5 N respectively act on an object.when will the resultant of the two vectors be at a maximum?

Physics

If a wave has a frequency of 24Hz and a wavelength of 15m, how do you calculate the speed of the wave ???? Please help

Physics

If a wave has a frequency of 24Hz and a wavelength of 15m, how do you calculate the speed of the wave ???? Please help

physics

A 25 mF capacitor is connected to a source of potential difference 100V. What is the resulting charge in the capacitor?

science (physics)

A 980 N box has a mass of 100 kg. What is the acceleration of the box due to gravity?

physics

if 8100 calories are released from 200g of steam at 100C, how much of the steam condenses?

Physics

what is the number of grams of steam at 100 degrees C that will condense as 5g of ice at 0 degrees C melts?

Physics

how much heat energy needed to convert 125g ice 27 deg C to 50 deg C

Physics

Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons.

physics

how much work (J) is done by friction when the mass is 150 kg and dragged for 10 m if the coefficient of sliding friction is .3?

Physics

An ideal refrigerator-freezer operates with a COP = 8.0 in a 28°C room. What is the temperature inside the freezer?

physics

If a 0.5kg toy car is rolling down a hill with a velocity of 0.8m.s, what is the car's momentum?

Physics

What is the gravitational force between two 5.00 kg masses that are 10.0 cm apart from center to center? (G = 6.67 × 10-11 N m2/kg2)

Physics

What are the frequencies and the note names of the first six harmonics of the note G3? Explain your procedure.

Physics

Find the mass of water that vaporizes when 3.94 kg of mercury at 248 °C is added to 0.183 kg of water at 83.0 °C.

Physics

Find the mass of water that vaporizes when 3.94 kg of mercury at 248 °C is added to 0.183 kg of water at 83.0 °C.

physics

The nuclei having same number of protons but different number of neutrons are called--------

Physics

You hit someone with a force of 197 N. How much force is exerted on you? Answer in units of N

college physics

If the initial tension in the string is (2.10+/- 0.02)N, what is the tension that would double the wave speed?

physics

a load 500N is raised 0.2m by a machine in which an effort of 150N moves 1m. what is the work done on the load?

applied physics

an ironworker drops a hammer 5.25m to the ground. what is its speed as it hits the ground?

Physics

Calculate d energy of d 3rd level of an atom if d ground state energy is -24.8ev

Physics

A big 2.5 blob of macaroni and cheese falls to the floor in 1.2 seconds. What is the impulse on the blob?

physics

if the angle between the incident ray and reflected ay is 120 degrees, what is the angle of reflectio?

Physics

Which of the following is correct for the two coherent light waves to produce zero light?

physics

If you run away from a plane mirror at 2.35m/s , at what speed does your image move away from you?

Physics

A car travels 30 km north in 25 min. and 40 km east in 35 min. What is the total distance traveled?

physics

What is the net force on a cart that is pulled to the right with 120 pounds and to the left with 30 pounds?

physics

What is the electric field intensity produced by a charge at 10 meters, where the electric potential is 1.44 volts?

Physics

If the total mass of the hydrogen in the hindenburg zeppelin was 18000kg, what volume did the hydrogen occupy?

Physics

An object accelerates from 10m/s to 16m/s in 10 secs. What will be the object’s velocity after 1 minute?

Physics

What happens to the brightness of light emitted by a light bulb when the current in the filament increases?

Physics

A car traveling at 11m/s accelerates to 2.82m/s^2 for 13 seconds how far does the car travel?

Physics I

Suppose a rocket launches with an acceleration of 32.0m/s^2. What is the apparent weight of an 95-kg astronaut aboard this rocket?

Physics I

Suppose a rocket launches with an acceleration of 32.0m/s^2. What is the apparent weight of an 95-kg astronaut aboard this rocket?

Physics

The frequency of a centrifuge is 60 Hz and its radius is 0.15 m. What is the centripetal acceleration of an object in the centrifuge at a distance of 0.15 m from the center?

physics

Why we use square root of density in Grahms law instead of simpl density?

physics

an airplane rolls down the runaway. compared to which reference point is the airplane in motion?

physics

Forces of 8.85 N and 2.21 N act at right angles on a stack. What is the mass of the stack if it accelerates at a rate of 4.4 m/s^2?

Physics

A circular ring of radius 10 cm has a continuous charge distribution of 4C/m . How many total electrons are on the ring?

Physics

Use the equation for acceleration to determine the acceleration for the following motion. Time(s) 0 1 2 3 4 Velocity(m/s) 0 2 4 6 8

physics

n object is dropped from rest. What is the acceleration after 6 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/

physics

An electron floats at rest above a sheet of charge with uniform charge density x. What is x in C/m^2

physics

If my kinetic coefficient and static coefficient are both 1.02, how can I explain why they are the same???? (For a horizontal surface)

Physics

At 1:00 p.m. a car, traveling at a constant velocity of 80 km/h toward the west, is 31 km to the west of our school.

Physics

A 0.40 g fruit in a tree has a gravitational potential energy of 200 J. How high from the ground is the fruit?

physics

A 2.0 kg rock is dropped from the top of a building. I lands 14.0 seconds later. How tall was the building?

Physics 221

What is the magnitude and direction of the electric field at a point 0.75 m away from a point charge of +2.0 pC?

physics

two forces 5N and 7N act on an object respectively.When will the resultant of the two vectors be at a maximum?

Physics

What affect does changing the mass of an object on a ramp have on the efficiency of the ramp? Explain.

physics

A man walks 10km due south. The displacement of the man from the initial position is

Physics

A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?

Physics

A penny is dropped from a 50 m high bridge, how fast was the penny moving when it hit the water?

Physics

A car experiences a constant acceleration of 2.3 m/s2. How long does it take (in s) for the car's speed to increase from 6.6 m/s to 17.9 m/s?

Physics

On an unknown planet, a pendulum of length 1.5 m swings with a period of 3.3 s. What is the acceleration of gravity on this planet?

physics

he x-component of a velocity vector that has an angle of 44∘ to the +x-axis has a magnitude of 4.3m/s . What is the magnetude velocity?

Physics

A boat takes 2.0hr {\rm hr} to travel 26km {\rm km} down a river, then 6.0hr {\rm hr} to return.

Physics

A boat takes 2.0hr {\rm hr} to travel 26km {\rm km} down a river, then 6.0hr {\rm hr} to return.

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