# 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 ?