Math/Physics

206,302 results, page 48

physics

8. Before you drop a ball held at a height of 5m with a weight of 20 N, what is its gravitational potential energy

physics

Is it possible for a frictional force to increase the mechanical energy of a system? If so, give examples.

physics

what is the speed of a ball after it has fallen freely from rest through a distance of 12 meters

physics

a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight anlge? f ?

physics

If a spring has a constant of 20N/m how much potential energy does it store if it is compressed 2m in joules? <3

physics

What average power is required for a runner with a mass of 80 kg to reach a speed of 8.2 m/s during a time of 1.8 s?

physics

4. What force is needed to push a 15 N object up a 20° incline at constant speed when the coefficient of friction is 0.30

physics

4. What force is needed to push a 15 N object up a 20° incline at constant speed when the coefficient of friction is 0.30?

Physics

Calculate the tangential speed of the earth around the sun (assuming a circular orbit).

Physics

A 1200 kg sports car accelerates from 0m/s to 27m/s in 10s. What is the average power of the engine?

Physics

a circuit contains a 9v battery and two 1 ohm bulbs. what is the voltage drop across each.

physics

What is the quantum particle of the electric field? Answer a. The proton. b. The electron. c. The photon. d. The neutron.

Physics

A 1300 sports car accelerates from rest to 90 in 6.5 . What is the average power delivered by the engine?

physics

does each of the two lenses used in a microscope produce a magnification of the object being viewed?

physics

calculate the impulse necessary to stop a 1500 kg car travelling at 90km/hour

Life...

Do i need to take precal and physics in highschool to become a nurse, dentist, or doctor?

physics

why does the filament of a bulb does not melt though it heats more than 3400 degree celcius

physics

--------------------------------------- A rugby player of mass 82kg is running at 6.0m/s. How much energy will be needed to stop him? ---------------------------------------

Physics

.17 kg hockey puck initial velocity 21 m/s stops 62m away. what is coefficient of friction?

physics

A rotating cylinder about 16 long and 6.2 in diameter what angular speed must it rotate?

physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water. True or False

PHYSICS

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.

physics

at time t=0 the driver starts to brae determine how long the bus takes to stop

Physics

Calculate the radial acceleration of an object on the ground at the earth's equator in m/s2, turning with the planet.

Physics

What is the force necessary to accelerate an object with a mass of 115 kg and and an acceleration of 6 m/s2 (squared) east?

physics

which object will have higher inertia a rock of 20kg or a hollow ball of 22kg

physics

A yo-yo of radius 10 cm and mass 1 kg is dropped from rest. What is the instantaneous torque on the yo-yo if I hold the string with my fingers?

physics

i have two kinetic energies and my homework asks for the ratio, K2/K1 Do i just divide them?

Physics, PLEASE HELP!!

A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?

physics

YOU PUSH A REFRIGERATOR WIT HA FORCE OF 50N AND IT MOVES 3 METERS ACROSS THE FLOOR

physics

A force of 3000 N is applied to a 1500-kg car at rest. (a) what is its acceleration? (b) what will its velocity be 5 s later?

physics

How would the use of dark matter affect the earth and universe? Explain possiblities

physics

A ball is thrown vertically upward with a speed of 27.6 m/s. How high does it rise? Answer in units of m.

Physics

As the temperature of an object becomes higher, what happens to the average wavelength of the radiation it emits?

Physics

does a baseball thrown at 100 miles per hour have a lot of force?

physics

find the force of a toy jeep if the mass is 50kg and is traveling at 4 m/s and the radius is 50 centimeter

physics

what force is acting on a circular platform rotating opposite of a person standing on the edge?

physics

a ball moves with a constant speed of 4 m/s around a circle of radius 0.25 m. what is the period of the motion?

physics

A projectile is launched straight upwards at 45 m/s. Three seconds later, its velocity is A. 75 m/s B. 30 m/s C. 15 m/s D. zero

physics

How high must a 2.0-kg basketball be thrown so that the top of its arc, it has a potential energy of 160 J?

PHYSICS!!!

By how many decibels does the sound intensity from a point source decrease if you increase the distance to it by a factor 6?

physics

how much work is being done if a 100 N box is lifted 3 meters off the ground???

Physics

If a clock says 10:30 am and the second hand rotates 960 degrees what time would it be?

physics

the period of revolution of a satellite is 90 min. Find the radius of the orbit assuming an acceleration of 9.8 m/s/s.

physics

Describe how the energy from a rotating flywheel can be transferred to moving parts of a child's toy.

physics

explain examples of physical laws used during the Apollo 13 mission to get it home

physics

a mass 3 kg is dropped from a 20m high stand how long does it take to reach the ground?

physics

a mass 3 kg is dropped from a 20m high stand how long does it take to reach the ground?

Physics

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?

Physics

How much force is needed to make a 1,400 kg car moving at 35 m/s come to a stop in 5.2s?

physics

How can I calculate exactly where a marble will drop if it is rolling of a table with very little friction??

physics

the frequency of yellow lights is 5.00 x 10^14 Hz. if it travels through space (where v= 3.00 x 10^8m/s) find the wavelength of this light.

physics

if a man weighing 80 kg falls from 20000 feet , what would be his weght when he hits the ground?

physics

a 150g-iron ball at 95 Celsius is dropped into a cavity in a block of ice

Physics 112

Two point charges, +3.18 µC and -6.40 µC, are separated by 1.32 m. What is the electric potential midway between them?

science (physics)

thank you for your help! my question is :how do you find the magnitude of the electric field that will balance the weight of an electron?

physics

A 7.9 kg object undergoes an acceleration of 2 m/s2. What is the magnitude of the resultant force acting on it? Answer in units of N.

physics

a student does 314 J of work in moving a desk 2.1 m. What was the magnitude of the applied horizontal force?

Physics

how fast must a roller coaster be going to get around a vertical loop with a radius of 15 m

physics

Work out the gravitational potential energy of a 2kg brick at a height of 9 metres.

physics

How many electrons must be removed from an electrically neutral silver dollar to give it a charge of +2.1 µC?

physics

Approximate the gravitational force of attraction between a 49.0 kg girl and a 52.0 kg boy if they are sitting 2.5 m apart

physics

Why does cross sectional area of a liquid stream reduces while falling vertically??

physics

a nurse counts 76 beats in one minute. what are the period and frequency of the hearts oscillations?

physics

A ball tossed upward reaches a maximum height of 3.0m. Show that its initial speed was 7.7m/s.

Physics

A car travels in a straight line for 5.4 h at a constant speed of 79 km/h . What is its acceleration? Answer in units of m/s2.

Physics

How many calories of heat will a person lose by evaporating 1250g of water and perspiration in a day?

Physics

How far does a point on the circumference travel if the wheel is rotated through an angle of 28.6 rads?

physics

Help me please to Find the tension in the two wires that supoort the light fixture. M=13 kg, è=43 degrees???!!

physics

determine the speed of a mass (1.00kg) after it has fallen a vertical distance of 12.5 meters

Physics

What is the time lapse between seeing the lightning strick and hearing the thunder 17 km away

physics

what is the frequncy per minute of a skater making rounds at rink with radius of 2.5 m of her speed is 5 km/hr?

Physics

Calculate the speed of an 7.8×104 kg airliner with a kinetic energy of 1.0 × 109 J. Answer in units of m/s.

Physics

How much work must be done to accelerate an 8x105 kg train: a) from 10 m/s to 15 m/s; b) from 15 m/s to 20 m/s; c) to a stop an initial speed of 20 m/s?

Physics

When calculating delta Tsample,why is th initial temperature taken to be 100 degrees Celsius

Physics

A 1300 kg sports car accelerates from rest to 85 km/h in 6.2 s. What is the average power delivered by the engine?

Physics

Calculate the distance (in km)that Larry runs if he maintains an average speed of 8km/hr for 45 minutes.

physics

how much should a ramp rise over 10 meters of run for an angle of 12 degrees

physics

5. What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter.

physics

What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter.

physics

How far will a car moving at 50 miles an hour travel in the time it takes to sneeze?

physics

A hunk of cast concrete with a weight of 10 N will float if it displaces 10 N of water true or false

Physics

Will a cyclist coast farther if the lamp connected to his generator is turned off? Explain.

Physics

Given that q = +17 mu C and d = 14 cm, find the magnitude of the net electrostatic force exerted on the point charge q2.

physics

Forces of 3 N and 4 N act the right angles on a block of mass 5 kg. Show that the resulting acceleration is 1 m/s².

physics

what is the wavelength of radar waves with the frequency of 6.0*10^10Hz? a. 0.0010m b.0.010m c.0.050m d.0.0050m

Physics

explain the concept of electric potential difference in terms of work done in transferring the charge

Physics

explain the concept of electric potential difference in terms of work done in transferring the charge

physics

what potential difference delta V is required to accelerate protons from the rest to 10% of the speed of light?

physics

Find the rms speed of H2O molecules in atmospheric water vapor at a temperature of 13.2° C.

physics

Evaluate the Rydberg constant R using Bohr theory and show that its value is R = 1.0974x10-1.

physics

the density of a block of wood with a colume of 50 cubic centimeters and a mass of 10o grams is

physics

How much charge flows through a 12 V battery when a 2 ìC capacitor is connected across its terminal?

physics

If an 80kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3s, what average power is generated

physics

What is the mass of a lead sinker witha volume of 3cm3? please show work Thank you

physics

What is the net force on a rock that weighs 500N if the weight of the water it displaces is 300N?

physics

Find the minimum kinetic energy needed for a 3.7×104-kg rocket to escape the Moon.

physics

claculate the force of gravity between two identical balls 8kg each, if they are 5m apart?

physics

claculate the force of gravity between two identical balls 8kg each, if they are 5m apart?

physics

what is the value of electric field intesity at a point between two co centric sphere

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