# 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?