Math/Physics

208,687 results, page 71

algebra based physics

Two protons in a nucleus are separated by 8.0×10−15m . What's the potential energy of the pair?

Physics

A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules or J

Physics

A 2473 kg elephant is walking at 3 m/s on a flat surface. How much kinetic energy does he have? Answer in Joules

physics

What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is 0.24? a_{max} =

physics

Explain in terms of the conservation of momentum why the ratio of the masses of a bullet and a gun must be carefully considered

Physics

what type of heat transfer does solar hot water heating use? (conduction, convection, radiation)

Physics

A traffic light is hanging from two cables tilted at 37 and 42 degrees. If it has a mass of 2.3 kg find the tension in each cable.

physics

A stone of mass m kg is held h metres above the floor 50s.The workdone in joules over this period is

Physics

How much pressure is exerted on a submarine at a depth of 8.50 km in the Pacific Ocean? (density of sea water = 1.025 x 10^3 kg/m3, P0 = 1.01 x 10^5 Pa)

physics

How many excess electrons are there in a typical lightning bolt that has about 16 C of charge? Answer 1 x 1020 1 x 1019 10 1 x 1016

physics

A 60 kg stunt person runs off a cliff at 5.3 m/s and lands safely in the river 11.8 m below. What was the splashdown speed?

Physics

design a pair of ear defenders and explain how they work using big idea of energy transfer

physics

Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

physics

a man walks 8km North and then 5km in a. direction 60degrees. find its distance from his starting point

Physics

Q1:Find the phase and group velocities of the de Broglie waves of an electron whose kinetic energy is 500kev?

physics

Calculate the average velocity for a remote controlled vehicle that starts with a speed of 1.0 m/s [forward] and then accelerates at 0.08 m/s2 [backward] for 4.0 s.

physics

Calculate the average velocity for a remote controlled vehicle that starts with a speed of 1.0 m/s [forward] and then accelerates at 0.08 m/s2 [backward] for 4.0 s.

Physics

Can someone explain the magnitude and direction of the acceleration of a ball moving upward, downward,and at the highest point? a=g

PHYSICS

the following data were obtained for the position of a ball as it rolled along a straight track DISPLACEMENT (CM) TIME 2.90 0.60 7.40 2.10 11.00 3.30 22.70 7.20 31.10 10.00

PHYSICS

he following data were obtained for the position of a ball as it rolled along a straight track DISPLACEMENT (CM) 2.90 7.40 11.00 22.70 31.10 TIME 0.60 2.10 3.30 7.20 10.00

Basic Physics

I don't understand how to work this problem out: Find x-component of vector a ⃗ = (7.0m/s 2 , - y-direction) Please help

PHYSICS

a 3000 N car is moving at 12.0m/s comes to a stop while skidding a distance of 25.0m. what is the coefficient of kinetic friction?

PHYSICS

a swimmer develops an average of 200 watts in a distance of 100m in 80 seconds. what is the force resistance in the water?

physics

an object is 25 cm from a concave mirror whose focal length is 50 cm where will the image be located how wil lthe solution be ?

physics

In a panic-stop, a car's brakes produced an acceleration of -8.0 m/s2 (or a deceleration of 8.0 m/s2). If you are traveling at 35 m/s, your speed after braking for 3.0 s will be

physics

a particuler moves along the sides AB,BC,CD of a square of side 25m with a speed of 15m/s. Its average velocity is?

Physics

A body travels from rest with acceleration 8m/s(squared)Find its velocity when it has covered a distance of 100 meter?

Honors Physics

Give some examples of applications that have resulted from work done by physicists on the exploration of space.

physics

Find the force when two poles to strength 100 and 90 cgs units are placed at a distance to 20 cm a part.

physics

power applied to a particle varies with times as p=3t^2-2t+1 Watt where t is in second. And the change in its kinetic energy b/w time t=2s t=4s

physics

A bus accelerates at 1.4 m/s2 from rest for 14 s. It then travels at constant speed for 23 s, after which it slows to a stop with an acceleration of magnitude 1.3 m/s2.

physics

A ball is thrown straight up with an initial speed of 60 m/s. How high does it go? Assume the accelera- tion of gravity is 10 m/s22

physics

A kangaroo jumps straight up to a vertical height of 1.19m, how long was it in the air before returning on earth

physics

A cauterizer, used to stop bleeding in surgery, puts out 2.30 mA at 14.0 kV. What is its power output? What is the resistance of the path?

physics

You're sailboarding at 6.1m/s when a wind gust hits, lasting 6.3s accelerating your board at 0.48m/s2 at a 35∘ to your original direction

physics

A baseball is thrown vertically upward with a speed of 17.8 m/s from a height of 1.11 m. How high does the ball rise from its original position?

physics

Two 2.5 kg physical science textbooks on a bookshelf are 0.25 m apart. What is the magnitude of the gravitational attraction between the books?

Physics

A loudspeaker emits energy equally in all directions at the rate of 1.75J/s. What is the intensity level at a distance of 15 m?

physics

compute the acceleration of a 1500-N block sliding down a 30 degrees incline. Assume friction is negligible

Physics

An FM radio station of frequency 107.7MHz puts out a signal of 50,000 W.How many photons/s are emitted?

Physics

An experimenter finds that no photo-electrons are emitted from tungsten unless the wavelength of light is less than 270nm.

Physics

An FM radio station of frequency 107.7MHz puts out a signal of 50,000W. How many photons/s are emitted?

Physics

An FM radio station of frequency 107.7MHz puts out a signal of 50,000W. How many photons/s are emitted?

Physics

A 20,000 kg vehicle is running at 80km/hr in a rotonda with a radius of curvature 25m compute for the centripetal force

Physics-Intro

Find the total force necessary to give a rocket of mass 25,000 slugs an acceleration of 28.0 ft/s2.

Physics

Forces of 9.5 N and 5.12 N act at right angles on a reddish-green block of mass 3.19 kg. How much acceleration occurs?

physics

Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?

physics

A particle of mass 10 kg is slowly lifted up to a height of 10 metre then calculate the workdone by external and gravity force ?

physics

Forces of 4.57 N and 4.74 N act at right angles on a reddish-green block of mass 5.76 kg. How much acceleration occurs?

physics

What force is necessary to keep a 2.00x10^3 car moving up a 15.0 degree incline at a constant velocity? (Mu=.200)

physics

find the change in momentum of a car weighing 1500kg when its speed increases from 36km/h to 72km/h uniformly

Physics

A wattmeter shows that a motor is drawing 2200w. What horsepower is being delivered? Is this correct? 2200/746 = 2.95

physics

Thirty microcoulombs of NEGATIVE charge experiences an electrostatic force of 27. mN. What is the magnitude and direction of the electric field?

physics

A person is kayaking in the ocean at 5.6 m/s 75° to the horizon when he experiences a current of 3.8 m/s 45° south of west. What is the speed and direction of his kayak?

physics

016 (part 1 of 2) 10.0 points A speedboat increases in speed from 17.9 m/s to 31.8 m/s in a distance 188 m. Find the magnitude of its acceleration.

physics

A car traveling at 6.5m/s accelerates 3.6m/s2 to reach a speed of 16.0 m/s. How long does it take for this acceleration to occur? Answer in units of s

physics

A 2.0kg book is lying on a 0.74m high table. You pick it up and place it on a bookshelf 2.0m above the floor

Physics

Repairing a spaceship CJ drops a hammer and it took .68 s to fall .90 m to the ground. What is the magnitude of the gravitational accerleration on mars

physics

A vector representing 170 N is oriented at 30 degrees with the horizontal. What is the magnitude of the vertical component? Answer in units of N,

Science Physics

How many Btu of heat must be added to 1200 lb of copper to raise its temperature from 100°F to 450°F

physics

car doing 60 mph and skids for 52.3 meters what is the speed at end of skid co/friction is 0.693 urgent help please

physics

a50g ball is hit to roll by a force of 100N.it rolls over 20m.what was its initial speed

Hurricane Project for Physics Class

1) Please describe the typical path(s) for hurricanes. Is this part of the pattern of convection?

Physics

A ball starts 1.175 meters off the ground and shot at an angle of 40 degrees with a velocity of 3.2 m/s. Where does it land?

physics

what is the t shirts vertical componet of its velocity at launch? if it launches straight at 45° above the horizontal plane at 141 /s?

Physics

A red flower seen in the light of mercury vapour lamp through a green filter will appear?

physics

with a cart of unknown mass, could you still determine whether its total energy is conserved? explain your reasoning

Physics

An aircraft landing on an aircrafts carrier is brought to a complete stop from an initial of 215km/h in 2.7 seconds. What is its acceleration in m/s2?

Physics

An aircraft landing on an aircrafts carrier is brought to a complete stop from an initial of 215km/h in 2.7 seconds. What is its acceleration in m/s2?

physics

A proton moves with a velocity V (2i - 4 j + k) m / s in a region where the field is given by B = (i + 2 j -3k) T . What is the magnitude of the magnetic force experienced by the load?

physics

How much power is developed by a jumbo jet that cruises at 250 m/s. When the trust of its engine is 100,000N?

physics

The mass of a pendulum moves a total horizontal distance of 14cm in one cycle. What is the amplitude of the vibration?

Physics

The brakes of a bike (with a person) having a mass of 63 kg, reduces it's velocity from 8.5 m/s to 0 m/s in 3.0 seconds. What is the magnitude of braking force?

AP physics

An object undergoes a displacement x while a force F acts on it. If F does zero work, then the angle between F and x must be

physics

Calculate the half-life of a radioactive substance that decays by a factor of 3 in concentration every 1 million years

Physics

Find the component form of ⃗v given a magni- tude of 9 and an angle of θ = 90◦ with positive

Physics

A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much friction must be present?

physics

to view full image of an object 160 cm high, the minimum size of the plane mirror required is?

Physics

A person weighing 900 Newtons is standing on snowshoes. Each snowshoe has an area of 2500cm^2. What is the pressure on the snow?

Physics

An object is thrown with speed of 17 m/s at an angle of 550. find the time it takes to reach its maximum height.

physics

A ball rolls off a 1.40 m high table with an initial horizontal speed of 0.600 m/s. How far will it land?

PHYSICS

without air resistance maximum range of projectile is obtained with an angle of ???? Can you please fill in the blank THANK YOU

Physics

Find the potential energy of a system often point charges. 7nC and 2nC separated by 0.03m

physics

when two lenses of focal length +10cm and -5cm are placed in contact then find the net power ?

College Physics

A 750 kg rocket accelerates straight upward from the ground at 60 m/s2. What is the force (thrust) provided by the engine?

Physics

Michael Jordan’s vertical leap was measured to be 122 cm. What was his takeoff speed, and how long would he be in the air?

fristyear physics

two girls a and b weighting 40 and 30 kg both of them pull 14m held by them.they will meet when covers a distance of?

physics

a small marble of negligible dimensions and of the mass 1.1kg is placed at a point A of a smooth frictionless circular

Physics

A baseball is thrown horizontally from a height of 3.6 meters at a speed of 24 m/sec. How far will it travel along the ground?

physics

A steel ball with a mass of 0.65 kg is swinging in a circle with a radius of 1.3 meters at a speed of 17m/s. What is the centripetal force?

physics

A motorcycle of mass 350kg has an acceleration of 3m/s when the resistance against motion is 200N.Calculate the force required

physics

A 4.40kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 74.0N

Physics

A motor cyclist travelling at 12m/s decelerate at 3m/s(squared)? How far does he travel while coming to rest?

physics

Why is parallax method not useful for measuring the distances of stars more than 100 light years away?

physics

A 102-kg man stands in an elevator that has an upward acceleration of 4.1 m/s2. The magnitude of the force exerted by him on the floor is about (g = 10 m/s2):

Physics

a boy whose weight is 600 N runs up a flight of stairs 10 m high in 12 second .What is his average power?

physics

A rocket is fired with an initial velocity of 200m/s at an angle of 60' to the horizontal.Find (1)the maximum height reached.

physics

In a tug of war match, each side pulls with a force of 500N, but the rope does not move. How much work is done?

Physics

Two point charges of magnitude 2.0 X 10^-7 C and 85 X 10^-8 C are placed 12 cm apart .What is the field intensity of each charge at the site of other ?

Physics

A tyre is suddenly brust when it was pumped to a presure of 4 atm at 20 degree celsius. Calculate the final temperature.

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