# 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?