Math/Physics

206,551 results, page 70

Physics

A boy sledding down a hill accelerates at 1.55 m/s2. If he started from rest, in what distance would he reach a speed of 6.90 m/s?

physics

if a ball is tossed from ground level upward at a speed of 44 m/s how long will it take to reach its maximum height

physics

A car comes to rest uniform deceleration at the rate of 5.8 m/s2 for 14.3 seconds. What is distance did it travel during this time??

Physics

It takes you 10min to walk with an average velocity of 1.2m/s to the north from the bus stop to the restaurant entrance. What is your displacement?

Physics

How long does it take T-Rex to reach its food 200m away assuming that he starts from rest and accelerates at 4.00 m/s2?

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

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?

physics

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?

physics

if you are stuck in the middle of a frictionless frozen lake with only your backpack, how can you get back safely to solid ground?

Physics

Problem 3- If a bug can jump straight up to a height of 0.5 m. a) what is its initial speed as it leaves the ground? b) How long is it in the air?

physics

A 4.00kg kg bucket of water is accelerated upward by a cord of negligible mass whose breaking strength is 73.0N N .

physics

Forces of 9.93 N and 1.23 N act at right angles on a reddish-green block of mass 3.02 kg. How much acceleration occurs?

physics

What maximum height will a 318.3 m driver each if it is launched at an angle of 17.0 tothe ground? The acceleration due to gravityis 9.81 m/s2.

physics

A flower pot with a mass of 3.8kg is hanging by 2 wires that make an angle of 48° from the horizontal. what is the tension in each wire?

physics

A flower pot with a mass of 3.8kg is hanging by 2 wires that make an angle of 48° from the horizontal. what is the tension in each wire

physics

A merry-go-round makes 23 revolutions in a 2.8min ride. Part A What is its average angular speed in rad/s?

Physics

the 8kg mass of an object moves in a distance of radius 10cm at 15m^2.calculate the angular velocity

PHYSICS

What's the total mechanical energy of a 300kg satellite in circular orbit 1400km above Earth's surface?

Physics

How much force is needed to hold a nearly weightless but rigid 1-L carton beneath the surface of water?

physics

Find the distance by which a 42cm diameter, 9.4m tall concrete column is compressed when it supports a 12900kg load

physics

if a teacher wanted to demonstrate mass in the classroom, which of the following objects should she use? a ruler or an eraser

physics URGENT

3. Using conceptual meaning of g = Fg/m [N/kg], answer the following: a) What does the spring scale read on the surface of the Moon?

Physics

Why do some cooks put ice in the pot to cook meat? Explain then prove your answer by solution.

Physics

Why is an ice cube at 0°C more effective in cooling soft drink than the same mass of water at0°C?

Physics

Why do some cooks put ice in the pot to cook meat? Explain then prove your answer by solution?

Physics

A copper ball 2 cm in radius is heated in a furnace to 400 degree celsius. if its emissivity is 0.3, at what rate does it radiates?

PHYSICS

Name and discuss the levels of organization in a multicellular organism starting from the basic unit or structure of life.

physics

A 0.0400 kg ice cube at -30.0°C is placed in 0.400 kg of 35.0°C water in a very well insulated container. What is the final temperature?

Physics

Consider the static equilibrium diagram below. What is the net force acting along the positive x-axis?

physics

An 87.0 kg fullback moving east with a speed of 5.0 m/s is tackled by a 83.0 kg opponent running west at 2.92 m/s, and the collision is perfectly inelastic.

Physics

suppose you have 3 resistors, each of value 0f 30 omega. List all the different resistances that you can obtain by combining them

Physics

Another pendulum swings to and fro at a regular rate of two times per second. Show that its period is 0.5 s.

physics

Eight charges (50μC each) are arranged on the corners of a cube side length 1 cm. What is the magnitude of the force on each charge in Newtons?

PHYSICS(HELP)

Eight charges (50μC each) are arranged on the corners of a cube side length 1 cm. What is the magnitude of the force on each charge in Newtons?

Physics

If a current is flowing with a value of 5.9 A, how much electron charge passes any single point in 25 seconds? A) 1.9 x 1020 e

Physics

Please help! 400 calories of heat are added to 40grams of water at 20celcius . What's the final temp reached ?

Physics

An object is dropped from a platform100 ft high. Ignoring wind resistance, how long will it take to reach the ground?

Physics

How much momentum does a .01 kg ping pong ball have if it is traveling at 25 miles/hour? (1.609km=1 mile)

Physics

How much momentum does a .01 kg ping pong ball have if it is traveling at 25 miles/hour? (1.609km=1 mile)

physics

Calculate the pressure exerted on the floor by the heel if it has an area of 1.45 cm2 and the woman's mass is 58.0 kg. Express the force in N/m2 and lb/in

physics

the work function of zinc is 3.6ev what is maximum enegy photoelectron by ultraviolet wave of light 3000angstrome

Physics

we have to transpose the following equation to find p, but I don't quite understand how to come up with the correct answer: x^2/p^2 + y^2/q^2 = 1 Appreciate help, thanks

physics

A.Use newtons first law to explain why whiplash occurs? B.why are cars fitted with head rests?

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

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