Math/Physics

211,502 results, page 55

Physics

Determine the acceleration of an electron placed in a constant downward electric field of 4.0X10^5N/C.

Physics

It took a car driver 30min to travel a distance of 50km. What is the average speed?

PHYSICS

Calculate for Bohr's atomic model the speed of the orbiting electron in the n = 7 state. (Answer in m/s)

physics

find the angle of projection at the horizontal range is twice the maximum height of a projecyile

Physics

A 3200 lb car traveling at 30 mi/hr speeds up to 60 mi/hr. How much useful work was supplied by the engine?

Physics

With what maximum speed can an unsecured passenger stay in their seat on a Ferris wheel that has a diameter of 12 m.

Physics

An electric kettle has a power of 1.2kw. How long will it take to heat 3 kg of water to the from 20¡ãC to 100¡ãC?

physics

What is the speed of a transverse wave in a rope of length 1.90 m and mass 65.0 g under a tension of 465 N?

Physics

What is the potential energy, in joules, of a spring with a force constant of 6 N/m when it is stretched 20 cm from its unstretched length

physics

a body starting from rest attains a speed of 8 m/s in 2 seconds. find the acceleration of the car.

PHYSICS ROLLING MOTION!!!

A unicycle with a tire 44.0 cm in diameter travels 2.00 km. How many revolutions does the wheel make?

physics

What quantity of energy is represented by 250cm^3 of a gas 100N.m^2 when the temperature is kept constant

Physics

What is the mass of water in a closed room 5.2m x 6.3m x 2.5m when the temperature is 24 degrees celsius and the relative humidity is 65%?

Physics

A runner runs 2.5 km eastward and turns northward to cver twice this distance. What is his displacement ?

physics

show the expression v=at is dimensionally correct where v represents speed an acceleration and t is instant time?

physics

a truck moving at 100kph has a mass of 27000 kg. what force is necessary decelerate it at rate of -3 m/s²?

physics

A stone is thrown up with a velocity of 39.2 at an angle of 30° above the horizontal find at what times, it will be at a height of 14.7

physics

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

Physics

Find the longest wavelength by resonating air in 20 cm tube which is opened both ends

Physics

A skier slides down a frictionless slope of angle 30, is the mechanical energy conserved?

physics

a pendulum swing with a speed of 1.5 m/s at its lowedt point. How high will it rise before it stops

PHYSICS topic is pressure

Why does a person feel difficult to breathe when he is in a deep well? Please answer!!!

Physics

How much work is required to lift a bag of wheat (mass 50kg) to a height of 2.4m?

Physics

Calculate the work done by a 300N Force moving a 20kg object a distance of 50m

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

The sun is 30 ∘ above the horizon. It makes a 54 m -long shadow of a tall tree.

Physics

Jennifer swims 4 complete lengths of a 50m pool. What distance did she swim? What is her displacement?

Physics

What happens to an object which is initially stationary, if a non-zero resultant force acts on it? Thanks.

physics

a 200kg body raised to a height of 10m. what is the gravitational potential energy of the system?

physics

How much heat does 25g aluminum give off as it cools from 95celsius to 30celsius?

physics

A neutron star has 10 km radius and rotation period 1.2 s What's the centripetal acceleration on its surface at the equator?

Physics

A neutron star has 12 km radius and rotation period 1.6 s. What's the centripetal acceleration on its surface at the equator?

physics

A high-speed drill rotating ccw at 2300 rpm comes to a halt in 2.9 s .

physics

A stone is dropped from a 100m bridge. How long does it take the rock to reach the ground?

physics

a bullet is fired horizontally with a velocity of 40 m/s from a height if 50m. how far it will fall to the ground

Physics

An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4.0s?

Physics

What is the order of drift velocity of electron during the flow of current through the metal?

physics

A car starts from rest and accelerates for 8.7 s with an acceleration of 4.4 m/s 2 . How far does it travel? Answer in units of m.

physics

What is the gravitational potential energy of a ball with a weight of 72 N when it is sitting on a shelf 1.4 m above the floor?

Physics

A 150 kg body is at rest and covers the constant force needed to impart a velocity of 8m/s to it in 5s.

Physics honors

If a racer runs at an average speed of 7m/a how far will she run in 1 min 45 seconds?

Quick Physics Question

Are both linear and angular momentum conserved in static equilibrium ?

physics

A 84.0 kg person is being pulled away from a burning building as shown in the figure below.

PHYSICS

what is the angle velocity of an object in a horizontal circular part with radius 1.5 with a constant speed of 12/s

physics

A mango fruit drops from the top of it's tree which is 40 m. How long does it takes to reach the ground

physics

If your car goes from 0 mi/h to 70 mi/h in 8 s, what is your average acceleration? Answer in units of miles/(hours x seconds ).

physics

A uniform rod of 1 meter is bent at its midpoint to make90.The distance from its centre of mass

physics

How many minutes would it take a radio wave to travel from the planet Venus to earth?

physics

An object is projected at an angle of elevation of 45 degree with a velocity of 100m/s. Calculate it's range

Physics

To what potential a sphere of radius 10cm be charged so that the surface density of charge is equal to 1

Physics

consider the circuit in the figure. find the current in the 13 ohm resistor. Answer in units of A

Science physics

How would the voltage output be affected if the armature is made to spin faster?

Physics

the co efficient of friction of a plane inclined at 30 degree is 0.4 . Then the acceleration of the body sliding freely on it is?

physics

A car slows down uniformly from a speed of 24.0 m/s to rest in 4.50 s. How far did it travel in that time?

Physics

If a man travels 7km N 40degree W and 10km East, find the resultant displacement.

physics

when an apple falls from a tree, and strikes the ground without bouncing, what happens to its momentum?

physics`

which has more momentum: a snail moving at .001m/s or a 2-ton boulder resting on the ground? why?

physics

What mass of ice at -14°C will be needed to cool 200cm³ of an orange drink(essentially water) from 25°C to 10°C?

physics

A particle is projected with a speed of 39.2m/sec at an elevation of 30degrees.find its greatest height.

Physics

a boat sails 150km N60°E, then 100km West. What is it's displacement from its starting point?

physics

Whn sand is poured on a rotatory disc what happens to its angular velocity. Explain

Physics

A 62 kg person is skiing down a 37 degree slope that has a coefficient of 0.15. what is their velocity after 5.0 seconds

physics

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

Physics II

find the pressure at the bottom of a vessel 76cm deep when filled with a) water b)mercury (sp.g. 13.6)

physics

How much heat energy must be added to a 3.0 cm × 3.0 cm × 3.0 cm block of aluminum to raise its temperature from -50∘C to 50∘C?

Physics

How much does it cost to operate a 23-W porch light for 24 h if electric energy costs 8¢/kWh?

Physics

A stone with a mass of 20kg and density of 20,000kg/m3 is immersed in water. Find its weight

physics

which formular do to use to calculate distace in newton's law if i have height and angle?

physics

How much work isneeded to stop a 20g bullet moving with a speed of 150m/s

Physics

Things around you are emitting infrared radiation that includes the wavelength 1.13 10-5 m. What is the energy of the photons?

Physics

Find speed of sound in air if distance is 170 meters and time is 1.1 second

Physics

What is the linear acceleration of a point on the rim of a 38 cm-diameter record rotating at 33 1/3 rev/min?

physics

A positive and a negative charge, each with a magnitude of 1.41 x 10^-5 C, are separated by a distance of 0.44 m. Find the force on each of the particles.

Physics

A cooking pot contains 0.8kg of water at 100degree celcius what is the specific heat

Physics

the speed of a train increases from 15 mi/h in a distance of 500 ft. calculate the average acceleration in ft/s squared

Physics

What is the direction of the displacement of a person who walks 10 km at 37 degrees south of east, then 14 km due west?

physics

An arc lamp operates at 80V . suggest a method to use it with 240 V d.c. source

physics

An arc lamp operates at 80V . suggest a method to use it with 240 V d.c. source

Physics

How long does it take a car to change it velocity from 15m/s if it accelerarate uniformly at 5m/s square?

Physics

The density of the dead sea is 1240kg/m^-3. Calculate the depth at which the pressure would be 3 atm

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

Two instances during which the heating effects of electric current is not required pls

physics

And and climb up 5 stairs , each of width 20 cm and height 20 cm . Find the distance covered and displacement of ant ?

Physics 2

What quantity of heat is needed to convert 1kg of ice at -10C to liquid at 20C?

Physics

The ratio of maximum and minimum magnitudes of the resultant of two vectors a and b is 3:1 now |a| is equal to

physics

a cricket ball is takes 3 sec to reach the maximum height its initial velocity is???

physics

How many electron can passes through a cross sectional area of a conductor per second

Physics

A bowling bowl has a mass of 25 KG. What is the acceleration of the ball if an upward force of 110 N is applied?

Physics PLS HELP

What is the difference between universal gravitational constant and acceleration due to gravity

physics

Starting from the constant-acceleration kinematic equations, write a formula that gives xf in terms of t, xi, vf, and a. xf

Physics

How come in the number 5.350, there are 4 significant figures? Is the 0 considered a trailing zero with a decimal?

physics

a pendulum swing with a speed of 1.5 m/s at its lowest point. How high will it rise before it stops

Physics

A bike starts from rest and accelerates to 20 m/s over a period of 6 seconds. What is the acceleration of the car?

Physics

How can an object be a specular reflector for some electromagnetic waves yet be diffuse for others?

Physics! NEED HELP!

A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?

Physics

What is the normal force when a 40 kg person jumps and is accelerating at 3 m/s2 upward while in contact with the ground?

Physics

What is the normal force when a 40 kg person jumps and is accelerating at 3 m/s2 upward while in contact with the ground?

As physics

General braking distance formula /working out please clearly say.

Physics

Emily rides her horse 48 km in 3 hours.What is her average speed in kilometers per hour?

physics

An object is dropped from a height H. During the final second of its fall, it traverses a distance of 57.8 m. What was H?

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