# physics please HELP !

74,760 results, page 64-
## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? -
## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? -
## Physics

What net external force is required to give a 30 kg suitcase an acceleration of 2.5 m/s2 to the right? Answer in units of N -
## physics

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point? -
## physics

Find the work done by 2.32 moles of an ideal gas if its volume doubles at a constant temperature of 22.6°C. -
## Physics

A car accelerates uniformly from rest at 3m/s(square).What is its velocity after travelling a distance of 24m? -
## physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h? -
## physics

What is the magnitude of the average acceleration of a skier who, starting from rest, reaches a speed of 10.5 m/s when going down a slope for 3.18 s? -
## physics

how much time does it take for a student running t an average speed or 5.00m/s to cover a distance of 2.00km? -
## physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h? -
## Physics

A car travels in a straight line for 3.9 h at a constant speed of 83 km/h . What is its acceleration? Answer in units of m/s2 -
## physics

a particle starts moving from rest with uniform acceleration . it travels a distance y in the next 2 sec -
## Physics

If a man weighs 900 N on the earth, what would he weigh on jupiter, where acceleration due to gravity is 25.9 m/s^2? -
## Physics

A stone is thrown vertically upward with a speed of 19.0m/s How fast is it moving when it reaches a height of 10.0m -
## Physics

You throw a ball downward from a window at a speed of 1.8 m/s. How fast will it be moving when it hits the sidewalk 2.8 m below? -
## Physics

Explain how a drop of water bulging over the edge of a coin demonstrates surface tension. -
## Physics

What is the maximum total force exerted on a 78 kg astronaut by her seat during the launch of the Space Shuttle? -
## Physics

a woman on a bridge 75 high sees a raft floating at a constant speed on the river below. -
## GENERAL PHYSICS

Two long, parallel wires separated by 90 each carry currents of 2.0 in a horizontal direction. -
## physics

If wind blows at 44 m/s over a house, what is the net force on the roof if its area is 180 m^2 and is flat? -
## physics

How long does it take a plane, traveling at a speed of 170 m/s, to fly once around a circle whose radius is 2900 m? -
## physics

a guy throws a ball up and catches it 3.5 seconds later. what is the max height and initial velocity. Please help! -
## Physics

With the energy needed to warm up some amount of water from 40C to 64C, how high could you lift it? -
## Physics

Q: A car travels in a straight line for 4.6 h at a constant speed of 95 km/h . What is its acceleration? Answer in units of m/s 2 -
## physics

A boy sledding down a hill accelerates at 1.30 m/s2. If he started from rest, in what distance would he reach a speed of 8.00 m/s? -
## physics

Calculate the electrical attraction that a proton in a nucleus exerts on an orbiting electron if the two particles are 1.13×10^-10 m apart. -
## physics

if the direction of a magnetic field around a straight wire is counterlcockwise, which direciton is the current traveling? -
## Physics

A 6.25 kg solid ball with a radius of 0.185 m rolls without slipping at 3.55 m/s. What is its total kinetic energy? -
## physics

An object is projected at an angle of elevation of 45 degree with a velocity of 100 m/s calculate its range -
## physics

How fast (in ) must a centrifuge rotate if a particle 8.00 from the axis of rotation is to experience an acceleration of 117000 's? -
## physics

A roller coaster travels 101 ft at an angle of 45.7 ◦ above the horizontal. How far does it move horizontally -
## physics

A cars starts from rest and after 20 seconds its velocity becomes 108 km-1 find the acceleration of the car -
## Physics

how fast would you have to be traveling at in a spaceship in order to appear to age 20% slower than your classmate left behind on earth -
## physics

Calculate the distance you will travel if you maintain an average speed of 12km/h for one-half hour. -
## Physics

determine the image distance for an object that is 45.0 cm from a double convex lens having a focal length of 15.0 cm -
## PHYSICS HELP

what is the minimum amount of energy required to accelerate horizontally a 3.0g bullet from rest to a speed of 40.0 m/s? -
## college physics

How many seconds would it take a 7.00hp motor to raise a 475 lb boiler to a platform 38.0 ft high? -
## Physics

A 4610 kg helicopter accelerated upwards at 2 m/s^2. What lift force is exerted by the air on the propellers? -
## Physics

An airplane lands and starts down the runway at a southwest velocity of 41 m/s. What constant acceleration allows it to come to a stop in 1.3 km? -
## physics

State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS -
## physics

State the surface powers required to produce the following lenses with +6.25D front curves. a. -0.50 DS b. +0.50 DS c. +1.75 DS -
## physics

A skater is gliding along the ice at 2.2 , when she undergoes an acceleration of magnitude 1.2 for 3.0 . At the end of that time she is moving at 5.8 -
## college physics

how long would it take a 4.50kW MOTOR TO RAISE A 175KG BOILER TO A PLATFORM 15.0M ABOVE THE FLOOR? -
## Physics

How can you easily increase the magnetic field strength inside a current-carrying coil? Could someone help? -
## mathematical physics

Using Green's Theorem evaluate the integral ∮c(xydx + x^2y^2 dy) where C is the triangle with vertices (0 ,0), (1, 0) and (1, 2). -
## Physics

What equations should I use to calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5800 km above the earth's surface? -
## physics

Calculate the internal energy of 25.0 g of low-density oxygen gas (O2) at a temperature of 255 K. -
## physics

Consider the motion of the tip of the minute hand of a clock. In one hour, the displacement and average velocity is ....... -
## PHYSICS

a constant force of 6.00N acts on a 3.00kg object for 10.0s. what are the changes in the objects momentum and velocity? -
## Physics

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

What is the strength of intermolecular forces in methylated spirit, acetone, water, glycerin and oil -
## physics

Why does a conductor carrying current experiences force when held in a magnetic field at right angles to it? -
## physics

Resultant displacement from 12m east to5m north to9m vertically upward -
## physics

a projectile is fired at an angle of 60 degrees with the horizontal and with the initital velocity of 80 m/s. What is the time of flight? -
## 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 resistance of a 900 watt toaster operating at 120 volts. Which formula do you use? -
## physics

How long will it take a 1030 W motor to lift a 330 kg piano to a sixth-story window 13.0 m above? -
## Physics

What coefficient of friction is required to stop a hockey puck sliding at 12.8 m/s initially over a distance of 66.5 m? -
## Physics

What is the partial pressure of water on a day when the temperature is 25C and the relative humidity is 33% P=___Pa -
## physics

in einstein's famous equation e=mc^2, describing the relationship between matter and energy, the units for E are m=====>kg, c=====>m/s a) kg m/s b)kg m/s^2 c) m^2/s^2 d)kg m^2/s^2 I think its either B or D but indecisive... -
## physics

Compute the electric field about a uniformly charged plane sheet using gauss law. -
## college physics

Calculate the angular speed of the moon if it makes a revolution around the earth in 27.3 days? -
## Physics

In general, what conditions with observable effects make magnets interact with non-magnet materials? -
## Physics

Calculate the skid-to-stop of a car travelling oa a road at 100km/h with a coefficient of friction of 0.68. -
## physics

if a race car's velocity increases from 4 m/s to 36 m/s over a 4 s time interval, its average acceleration would be 10 m/s 2 ? IS THIS TRUE ? -
## Health Physics

As one exhales, what change in energy takes place between the diaphragm and the air in the lungs? -
## physics

What is the volume of a metal which weighs 28g less in kerosene and the densty is 800 kgm3 than it does in air -
## physics

If you heat a thin circular ring in a oven, does the rings hole get larger or smaller.why? -
## physics

What is the number of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to 1.00×104 ? -
## physics

what is meant by the change go temperature of 1 degree celcius on the scale of a plantinum resistance thermometer -
## physics

Calculate the speed of sound wave in air if its frequencies and wavelengths are 256Hz and 1.32m -
## physics

if two forces 10N and 20N are inclined at angle 60degree to each other. Find the resultant force. -
## physics

Does the following represent a sample or a population? calories created while burning all of the coal taken from a rail car -
## physics

vector b has x,y, and z components of 4.0, 6.0, and 3.0 units, respectively. Calculate the magnitude of b and the angles that b makes with the coordinate axes. -
## Physics

Find the maximum height reached by a ball thrown upward at a velocity of 95ft/s -
## physics

Three resistors, 1.17, 2.84, and 3.65Ω, are connected in series across a 20.3-V battery. Find the power delivered to each resistor. -
## physics

Radio waves transmitted through space at 3.00¡¿10 8 m/s by the Voyager spacecraft have a wavelength of 0.120 m. What is their frequency? -
## Physics

An elevator is moving upward at 0.97 m/s when it experiences an acceleration 0.34 m/s 2 downward, over a distance of 0.80 m. What will its final velocity be? -
## PHYSICS!

Find the gauge pressure in pascals in a soap bubble 0.04 m in diameter. The surface tension is 25.0 x 10^4 Pa. -
## Physics

An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane? -
## physics

If the sun's mass is about average, how many stars are there in the Milky Way galaxy? (This is all the information given in the question and I don't know where to go from here). -
## physics

Three resistors, 1.17, 2.84, and 3.65Ω, are connected in series across a 20.3-V battery. Find the power delivered to each resistor. -
## Physics

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

A projectileis given an initial velocity of icap + 2jcap . The catesian equation of its path -
## physics

How high will an object rise if it is projected upward at a 45 degree angle and an initial velocity of 50 m/s? -
## math in physics

find the force if f between charges of 100mc -50mc located 50cm a part? -
## science (physics)

A projectileis given an initial velocity of icap + 2jcap . The catesian equation of its path -
## physics

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 7.00 m/s? -
## Physics

Two positive charges of 0.2microC and 0.01 microC are placed 10cm apart. Calculate the work done in reducing their distance to 5 cm -
## physics

if the shortest lenght of the tube for resonance is 0.1m and next resonanc length is 0.35m what is the frequency of the vibration. -
## physics

What is the power delivered by a motor lifting an elevator weighing 1250kg up 89 floors at 16.8 meters per second -
## college physics

A cannonball shot at an angle of 60 Degrees had a range of 196m. What was its initial speed? -
## PHYSICS

A point source of a wave emits 195 watts. What is the intensity at a distance of 4.56 meters? I = -
## physics

a bus decreases its speed from 80kmh-1to 60kmh-1 in 5 sec find the acceleration -
## physics

A force of 291.0 N is used to push a 140 kg mass 30.0 m horizontally in 3.00 s. Calculate the power developed in kW. -
## physics

Find the field produced by a uniformly charged sheet carrying 93pC/cm2 . -
## jru-physics

what potential energy is acquired by a block of steel whose mass is 50 kg when it is raised 200 cm? -
## physics

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

What is quantity of heat required to melt down completely 1kg of ice at 30 degree celsius -
## Physics

A football is kicked at 15 m/s with an angle of 35 degrees with the ground. How long is it in the air? How far will it land? Can someone help plz... Thanks!