Math/Physics

208,687 results, page 57

Physics

An object is thrown vertically upward with a speed of 31.8 m/s. How long does it take to reach this highest altitude?

physics

Which bug experienced the greatest accelera- tion? 1. Their acceleration is same. 2. Unable to determine. 3. the VW 4. the insect

college physics

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

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

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

how much heat is required to change 400g of ice at -20c into steam at 120c

Physics

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

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-non calc

a hammer was released from rest vi=0m/s taking 1.12 seconds to fall 1 meter. How do you solve that

PHYSICS

How fast is 65 mph in meters per seconds? (i just need the answer) thanks very much

physics

An object is dropped onto the moon (gm = 5 ft/sec2). How long does it take to fall from an elevation of 250 ft.?

physics

How long would it take for a stone to fall 250m traveling at a speed of 10m/s squared?

physics

A 1600 kg car travels at a speed of 10.5 m/s. What is its kinetic energy? Assume that air resistance is negligible.

Physics

What is the frequency of an EM wave emitted most strongly by a glowing element on a stove with temperature 1500 K?

physics

If a man weighs 853.0 N on Earth, what would he weigh on Jupiter where the acceleration due to gravity is 25.4 m/s2?

physics

If a man weighs 853.0 N on Earth, what would he weigh on Jupiter where the acceleration due to gravity is 25.4 m/s2?

physics

What is the radial acceleration of an object at a point 25 meters from the axis of rotation that has a radius and a period of .22 seconds?

physics PLEASE HELP

how do you rearrange this equation weight=T1sin57+[T1cos57/cos23.5]xsin23.5 when you're trying to isolate T1?????

physics

What gravitational force do the two protons in the helium nucleus exert on each other? Their separation is approximately 1.0 {\rm fm}.

physics

A rock is dropped from a height of 130.0 meters. With what velocity does it land? How long does it take to fall?

Physics

A 3200kg helicopter must accelerate up at 1.0m/s^2. What minimum lift do the rotors need to produce? Thanks for answering!

physics

How much spring elasticity would be needed to make a 50 pound child jump higher

Physics

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

physics

show that in the limit that the radius of the sphere goes to zero to kept the magnetic moment constant

physics

(a) What is the torque about the origin on a jar of jalapeno peppers located at coordinates (1.0 m, -4.0 m, 2.0 m) due to force F1 = (-3.0 N) + (2.0 N) + (-5.0 N) ?

physics

what is the symbolic expression for the wavelength ë of a photon in terms of its energy E, Planck's constant h, and the speed of light c.

physics

2. A hockey player is skating in a straight line at 1.5 m/s. He then increases his speed to 7 m/s in 3 s. What is his average acceleration during this 3 s?

physics

In the Melde's string apparatus, why there is no standing wave in the segment between the pulley and mass hanger?

Physics

A wave with frequency 12.2Hz and amplitude 47.7 mm moves in the positive x direction with a speed of 8.9 m/s. What is the waves wavelength?

physics

If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 66 cm 18 cm 15 cm, what would its mass be

physics

How would you find the coefficient of kinetic friction if you're given a weight of 627 N and theta=45 degrees?

physics

A wave with frequency 11.3Hz and amplitude 48.1 mm moves in the positive x direction with a speed of 5.6 m/s. What is the waves wavelength?

physics

A wave with frequency 11.3Hz and amplitude 48.1 mm moves in the positive x direction with a speed of 5.6 m/s. What is the waves wavelength?

need physics help

d=2.1 a=? vi=0 and t=.60 and i have to use the formula d=vit+1/2at^2, how do i do this? can you please show work so i can understand.

physics

in deep space a gun is fired; how much force will be required to keep the bullet going?

physicS

What is the longest wavelength for standing waves on a 238.0 cm long string that is fixed at both ends?

physics

What is the longest wavelength for standing waves on a 238.0 cm long string that is fixed at both ends?

physics

A 2.2 kg purse is dropped from 55 m above before reaching the ground with a velocity of 25 m/s. What was the average air resistance.

Physics

1. Could a horizontal axis of rotation be used satisfactorily in an experiment uniform circular motion? Explain

physics

hummingbird beats wings with frequency of 80.0 Hz. What is period of bird's flaps? I know T = 1/f , but what is the label/units for the answer?

physics

a child twirls a yo-yo about in a horizontal circle. The yo-yo has a mass of 0.20 kg and is attached to a string 0.8 m long. what is the velocity of the yo-yo? thanks!

Physics

What would the volume of commercial butane be equal to given an air flow of 0.6 cubic metres/hr?

physics

Calculate the period of a ball tied to a string of length 0.3 m making 1.9 revolutions every second.

physics

A 0.150-kg ball, moving in the positive direction at 12 m/s, is acted on by the impulse of 4N*s what is the balls final velocity

physics

A 1300 sports car accelerates from rest to 95KM/H in 7.0S .What is the average power delivered by the engine?

Physics

A 200kg motorcycle is driving in a circular path at 1 rev per 5 seconds and the circle has r=12m

Physics

A standing wave has wavenumber 200 rad/m. What is the distance between two adjacent nodes.

physics

How much potential energy does a 20-kg barrel have when it is in the truck whose floor is 5.0 m above the ground?

physics

A tennis ball is thrown directly upward with an initial speed of 25 m/s. What is its velocity in m/s when it hits the ground?

physics

How far must the point charges = 7.20 and = -25.0 be separated for the electric potential energy of the system to be -130 ?

Physics

If I have an originaloscilation frequency of .64 and amplitued of 15 What would doubling the mass of the object do to the freqency and amplitude?

physics

Mechanical energy is the difference between the kinetic and potential energies of an object true or false?

physics

Mechanical energy is the difference between the kinetic and potential energies of an object true or false?

physics

a .105 kg hockey puck moving at 48 m/s is caught by a 75 kg goalie at rest. With what speed does the slide on the ice?

Physics

An automobile with an initial speed of 3.56 m/s accelerates uniformly at the rate of 2.7 m/s2. Find the displacement of the car after 4.1s.

Physics

Find the speed of a pendulum bob at the bottom of its swing if its initial displacement is 5 degrees and its period is 2 s.

Physics

What is the rotational inertia of a 10 kg rod with a length of 0.9m and rotating about an axis passing through its end?

physics

In what direction and with what speep must he push away his pack in order to return to his vehicle in 30s?

Physics

Explain atomic line spectra in terms of transitions between discrete energy levels.

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

What observation shows that diamond has a slightly different index of refraction for each of the various colours of the spectrum?

physics

If four containers, 10ml to 50ml,have the same temperature, which has the greatest thermal energy?

Physics

What thrust does a 350 model rocket need in order to have a vertical acceleration of 14.0 on the Earth?

physics

using well labelled diagrams,briefly describe how you would determine the density of an irregular object

physics

a box is thrown upwards with a velocity of 8m/s and takes 2seconds to reach its maximum height.how high does it go up

Physics

Make an analogy between heat capacity and density. Describe which quantities correspond to one another. Thanks!

physics

Two charged spheres are 8.00 apart. They are moved, and the force on each of them is found to have been tripled

physics

what is the net force on a car cruising at a constant velocity on (a) a level ground and (b) going up a hill

physics

Calculate the speed at the edge of a disc of radius 4 cm that rotates at the rate of 8 rev/s. Answer in units of m/s.

Physics

Why is the total distance traveled by a mass traveling in a circle of radius R during n revolutions, 2piRn?

Physics

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

Physics

A loud speaker emits energy in all directions at a rate of 2.75 J/s . What is the intensity level at a distance of 25 m?

PHYSICS!!

free body diagram of a 4 kg bucket accelerating downward 2 meters per second squared

Physics

(a) Calculate the speed of a proton after it accelerates from rest through a potential difference of 285 V.

Physics

What must be the orbital speed of a satellite in a circular orbit 740 km above the surface of the earth?

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

Physics

A person is jogging at 3.5 m/s and grabs a rope that is hanging vertically from a tree. How high can the student swing?

physics

An acorn and tree leaf fall from the same height and time. Which reaches the ground first and why?

physics

What is the average current through a conductor that carries 4 375C during a 2 min time period?

physics

an electric motor lifts on elevator 9 m in 15s by exerting an upward force of 1.2 x 10^4 calculate the power

physics

A man moves along a semi-circle. What is the relation between distance covered (S) by him and his displacement (D)? S = D S > D S < D

Physics

How do I solve this question: What is the resistance of a laptop computer that has an 11V battery & requires 15W of power?

physics

find the speed and period of a satellite that would orbit Mars 203 km above its surface.

physics

How much heat in KJ is needed to change 3.0 kg of ice at -10C into (superheated) steam at +150C ?

Physics

Calculate  the  length  of  a  meter  stick  moving  with  a  speed  of  v  =  0.9995c  as  measured  by  an   observer  at  rest.

physics

What is the frequency of the EM wave emitted most strongly by a glowing element on a stove with temperature 1,500 K

physics

What is the period of the hand on a clock that measures the minutes? What is the frequency? Please show work, Thank you, Abbie

physics

what is the magnitude and direction of the electric field 20.0 cm directly above an isolated 33.010 neg6 C charge?

physics

suppose you apply 3 newtons of force to slide a box 2 meters in 6 seconds, how much work did you do?

Active physics

How much hear must be added to 1.5kg of water at -25degC to raise it up to 119degC?

help fast ,( physics)

What is the net electrostatic force on the charge q3 (-48ìC), due to charges q1(+78ìC) and q2 (+50ìC)?

physics

how would you measure the resistance of an electrical device, such as a lamp, by the voltmeter-ammeter method?

physics

why we cannot use visible light for studying the crystal structure using Bragg’s diffraction method?

physics

a man weighing 500N runs up a staircase half a minute he rise up by 4m. a.what work did he do? b.what was his power?

physics

a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g

physics

a stone is thrown vertically upward with an initial velocity v0. the distance travelled by it in time 1.5v0/g

physics

A ball is thrown vertically upward with a velocity of 100m/s.It will reach the ground after hw many sec?

physics

How much heat must be absorbed by a 500 g pot of water in order to raise the temperature from 20„aC to 30„aC?

physics

How long will it take an echo to return across a canyon that is 61.0 m from one side to the other if the temperature is 25 C?

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