# Math/Physics

208,687 results, page 83

### physics

CALCULATE THE ACCELERATION FOR A 10.0 KG BLOCK WHICH IS BEING PULLED UP A 35.0 DEGREE SLOPE BY A FORCE OF 140 N IF THE COEFFICIENT OF SLIDING FRICTION IS 0.100

### physics

CALCULATE THE ACCELERATION FOR A 10.0 KG BLOCK WHICH IS BEING PULLED UP A 35.0 DEGREE SLOPE BY A FORCE OF 140 N IF THE COEFFICIENT OF SLIDING FRICTION IS 0.100

### Physics

A 70-kg ancient statue lies in the bottom of the sea. It’s volume is 3.0 x 10 4 cm 3 How . much force is needed to lift it? (Use g=10 m/s 2 and the density of water is 1.0 x 10 3 kg/m 3

### physics

Zephram is on roller blades on a hill. He starts from rest and skates for 5.5s accelerating uniformly at 3.5m/s2. Show that the distance traveled is 53m.

### Physics

Two objects attract each other gravitationally with a force of 2.3×10−10 when they are 0.21 apart. Their total mass is 4.50 . Find their individual masses.

### Physics

Two objects attract each other gravitationally with a force of 2.7×10−10 when they are 0.65 apart. Their total mass is 4.4 Find their individual masses.

### Physics

What is the magnitude of the apparent weight of a 65 astronaut 3600 from the center of the Earth's Moon in a space vehicle moving at constant velocity?

### Physics

About how much pressure do the feet of a 6000-kg elephant exert on the ground? Assume each foot has area of 0.10 square meters.

### physics

A snowboarder of mass 71.8 kg (including gear and clothing), starting with a speed of 4.8 m/s, slides down a slope at an angle θ = 37.1° with the horizontal.

### physics

A transverse wave, frequency 15.0 Hz, travels along a string. Distance between a crest and an adjacent trough is 3.50m. What is its wavelength?

### Physics-Please help

Could someone provide me with a simple explanation of how the Doppler Effect is used to determine the speed and direction of moving object

### Physics

How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to experience an acceleration of 115,000g's?

### Physics

If you tried to smuggle gold bricks by filling your backpack, whose dimensions are 55cm* 30cm *16cm , what would its mass be?

### physics

Solid and hollow cylinders both roll from rest down an inclined plane. Explain the difference in speeds at the bottom.

### physics

1. How far apart must two protons be if the electrical force of repulsion acting on either one is equal to its weight?

### physics

How far apart must two protons be if the electrical force of repulsion acting on either one is equal to its weight.

### physics

Five forces act on an object: (1) 60.0 N at 90°, (2) 40 N at 0°, (3) 80 N at 270°, (4) 40 N at 180°, (5) 50 N at 60°. What are the magnitude and direction of a sixth force that would produce equilibrium

### physics

if electron are caused to fall through a potential difference of 100000 voltage , determine their final speed if they were initially at rest.

### physics

if electron are caused to fall through a potential difference of 100000 voltage , determine their final speed if they were initially at rest.

### Physics

About how much pressure do the feet of a 6000-kg elephant exert on the ground? Assume each foot has an area of 0.10 square meters.

### physics in five mintues

hi how can you relate potential difference to finding the radius of a postivie ion moving through a magnietic field? thank you!

### Physics

What is the magnitude of the force per meter of length on a straight wire carrying an 8.50 -A current when perpendicular to a 0.55 -T uniform magnetic field?

### physics

AC power in the United States has 60 cycles per second. What is the period (in seconds) for this current? Round your answer to 3 decimal places.

### Physics

A 200-Ù resistor, 40.0-mH inductor and a 2.00-ìF capacitor are connected in series with a 120-V rms source at 1000 Hz. What is the phase angle of this circuit?

### physics

Why do many musicians wear earplugs during their performances even though the intensity of the sounds produced is lower than the threshold of pain?

### physics

Which principle can be applied to explain what happens to the pitch of a sound as the source comes closer and close,pass the listener and away?

### physics

Why do many musicians wear earplugs during their performances even though the intensity of the sounds produced is lower than the threshold of pain?

### Physics

A motorcycle with a mass of 350 kg is accelerated from rest to a velocity of 30 m/s by a force of 4000 N. calculate the distance over which this acceleration occurred.

### physics

If a burning log is a black object with a surface area of 0.35 m2 and a temperature of 800 ¢ªC, how much power does it emit as thermal radiation?

### physics

With what tension must a rope with length 2.70 and mass 0.150 be stretched for transverse waves of frequency 43.0 to have a wavelength of 0.850 ?

### physics

Determine the force of interaction between 2 electric charges q1= 1x10-6 C and q2= 2x10-6 C at the distance r = 2 m. I think the formula is F=kq1*q2/r2? How do I find k?

### physics

Young's modulus for a rod is 4 X 4x10 to the 11th power. what strain will be produced by a tensile stress of 420 MPa? I don't know where to start with this...

### physics

a wheel turning with angular speed of 30 rps is brought to rest with constant acceleration. It turns 60 revolutions before it stops.

### physics

What is the image distance of a 4 cm tall object placed 40 cm from a concave mirror having a focal length of 10 cm? Choose one answer. a. -13.3 cm b. 13.3 cm c. -40.0 cm d. 40.0 cm

### physics

If the breakers at a beach are separated by 5m and hit shore with frequency of 0.3Hz, at what speed are they travelling? Please show all work, Thank you

### Integrated Physics and Chemistry

Energy that is dissipated during heat flow cannot usually be used to produce work. True False

### Physics

An outfielder throws a 0.150 kg baseball at a speed of 26.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?

### physics project

how to develop a Rube Goldberg machine that will (1) raising a flag on a pole and (2) squeeze a minimum of a 1 cm length of toothpaste on a toothbrush.

### physics

Assume that here in sussex we live at exactly latitude 45 degress. Calculate the tangential speed, in m/sec and in mph that we are rotating at

### Physics

How long will it take a charged 80-ìF capacitor to lose 20 percent of its initial energy when it is allowed to discharge through a 45 ohm resistor?

### Physics

Find the electric field at P in the figure shown below. (Take r = 1.5 m and θ = 41°. Measure the angle counterclockwise from the positive x-axis.)

### physics

How strong an electric field is needed to accelerate electrons in a TV tube from rest to one-tenth the speed of light in a distance of 4.9 cm ?

### physics

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

### physics

A satellites are placed in a circular orbit that is 2.44 × 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance?

### Physics

If a tank is standing up i.e 1.200 dia x 1.100 high with 650 kg inside, How much water pressure to lift it Cheers

### physics

1 A steel wire, 150 m long at 10¢XC, has a coefficient of linear expansion of 11 „e 10ƒ{6/C¢X. Give its change in length as the temperature changes from 10„aC to 45„aC. 5.8 cm

### physics

If a professional jumper jumps in a running trainn and remains in air (say,4 ~5 sec),does he returns back his original position?

### physics

a motorboat travels 25.0 km/h in still water. what will be the magnitude and direction of the velocity of the boat if it is directed upstream on a river that flows at the rate of 4.00 km/h?

### Physics

Calculate the magnetic flux density in air at a point 15mm from a long straight wire carrying a current of 100A

### physics

A car is heading towards a brick wall at 80 km/hr, he starts breaking 30 feet away. What acceleration is required to avoid a collision?

### Physics II

Find the work done in pulling a 120 gram box in an incline plane, 150 cm long and 90 cm high if the coefficient of friction is 0.25.

### physics

A 0.15 kg ball is attached to the end of a 0.82 m string and moved in a horizontal circle at 4.3 m/s what net force is needed to keep it in a circular path

### physics

How much time would Simpson save by in- creasing his average velocity to 105 km/h to the east? Answer in units of min

### Physics

An object is in free fall. At one instant, it is traveling at 41 m/s. Exactly 3.2 s later, what is its speed? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s

### physics 180

a gazelle attempts to leap a 1.8 meter fence. assuming a 45 degree takeoff angle, what's the minimum speed for the jump?

### Physics- science

An automobile with an initial speed of 4.82 m/s accelerates uniformly at the rate of 2.2 m/s2. Find the displacement of the car after 5.9 s. Answer in units of m

### physics

A 300 kg sailboat accelerates at 0.5 m/s^2 at an angle of 25degrees North of East. Find the magnitude and direction of the force responsible for this accelereation.

### physics

How far to the nearest tenth of a meter can a runner running at 10 m/s run in the time it takes a rock to fall from rest 91 meters

### physics help please

An airplane that can fly at 300 km/hr is flying at 210 when it is hit by a wind of 125 km/hr at 110. What is the new velocity of the plan?

### physics

For an object travelling at a constant velocity, how does the dispalcement change over equal time intervals? I do not understand this question pls help.

### physics

A diver leaves the board traveling at 3.5 m/s at an angle of 75º with respect to the horizontal. What is her speed when she hits the water, 3 meters below?

### physics

If Joe rides south on his bicycle in a straight line for 26 min with an average speed of 11.6 km/h, how far has he ridden? Answer in units of km

### Physics

The coefficient of kinetic friction for a 22 kg bobsled on a track is 0.15. What force is required to push it down a 6.0° incline and achieve a speed of 64 km/h at the end of 75 m?

### physics

An outfielder throws a 0.150-kg baseball at a speed of 50.0 m/s and an initial angle of 30.0°. What is the kinetic energy of the ball at the highest point of its motion?

### physics

How far to the nearest tenth of a meter can a runner running at 15 m/s run in the time it takes a rock to fall from rest 68 meters?

### Physics

what is the moment of interia of a solid cylinder of radius R=0.0950m thickness t=0.015m total mass M=3.565kg? show your work

### Physics

A roller coaster moves 4.2 m horizontally, then travels 6.9 m at an angle of 30º above the horizontal. What is the resultant displacement from its starting point?

### physics

a cannonball is fired horizontally straight up at a modest speed of 9.8. Compute its maximum altitude and the time it takes to reach that height

### physics

what force is needed to accelerate at child on a sled at 1.4 meters per second square (total mass 55 kilo gram)

### physics

A bird is sitting on a wire 22m long. The wind makes it move, creating a standing wave with 8 loops. What is the wavelength?

### physics

A teacher is shot out of a cannon. He leaves the barrel at an angle of 25.0o to the ground with a velocity of 45.0 m/s. How far down range will he land?

### physics

A 4.5 kg object is accelerated from rest to a speed of 39.2 m/s in 76 s. What average force was exerted on the ob- ject during this period of acceleration? Answer in units of N

### physics

true of false- if you only want a small volume of hot water, you should place the immersion heater near the bottom?

### Physics

A large merry-go-round completes one revolution every 17.5 s. Compute the acceleration of a child seated on it, a distance of 5.80 m from its center.

### Physics Honors

A pitcher throws a fast ball horizontally at 42.1 m/s How far does it drop before crossing the plate, 18.3 meters away?

### physics

Brookney kicks a soccerball with a speed of 17m/s at 43 degress above the horizon. How far does the ball go before it hits the ground?

### physics

a car is pushed along at 2.50 times 10^3 kg from rest creating 5000 joules of work. It moves 25 meters. what is the horizontal force ?

### 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 3500 m?

### Physics

A baseball was hit at 45m/s at an angle of 45 degrees above the horizontal. How long did it remain in the air? How far did it travel horizontally?

### physics

What is the take off speed of a locust if its launch at an angle of 60 and its range 88m. Also calculate the time of flight (g=10m)

### Physics

What is the rotational inertia of a solid iron disk of mass 45 kg, with a thickness of 3.44 cm and radius of 19.0 cm, about an axis through its center and perpendicular to it?

### Physics

An airplane with an airspeed of 33.3 m/s is headed 30 degrees east of north in a wind blowing due west at 30 m/s. What is the ground speed of the plane?

### physics

consider the loop in the figure. The area=600m, and it spins with angular velocity =40.0 rad/s in a magnetic field of strnght B=.400 T

### physics

A bat at rest sends out ultrasonic sound waves at 51.1 and receives them returned from an object moving directly away from it at 22.3 .

### physics

a gymnast tumbles forward 4.0m does cartwheels to the left for 6.0 m and climb a vertical rope to a height of 3.0m. What is the magnitude of the plane's displacement from the airport?

### physics

Question Part Points Submissions Used A bus slows down uniformly from 75.0 km/h (21 m/s) to 0.0 km/h in 220 m. How long does it take to stop?

### physics

what is the length of the shortest pipe closed on one end that will have a fundamental frequency of 60 hz on a day when the velocity of sound is 340 m/s?

### physics

A ball has a diameter of 3.86 cm and average density of 0.0836 g/cm3. What force is required to hold it completely submerged under water?

### Physics

A 1200 N force is exerted on a 700 kg crate to move it across a loading dock. If the coefficient of friction is .50 what is the crates acceleration?

### physics

the magnitude of 2 vectors are 4 and 5 units and the angle b/w them is 30,taking first vectoron x-axis.find the magnitudeof resultant vectorand its direction?

### physics

find the effective weight of an astronuat ordinarily weighing 50kg when his rocket moves vertically upwards with 6gm acceleration

### physics

A merry-go-round accelerating uniformly from rest achieves its operating speed of 3.4 rpm in 2 revolutions. What is the magnitude of the angular acceleration?

### physics

A 15 kg box slides across the floor with an initial velocity of +7.6 m/s. It comes to a stop after sliding +14.8 m. How much friction was present?

### physics

if you have and open end air column with a length of 75.0 cm and the fifth harmonic is 1175 hz, what is the fundamental frequency? what is the speed of the wave?

### Physics

a bus moving at a speed of 20m/s begins to slow at a constant rate. Find how far it goes before stopping?

### physics

What is the initial height big an object if, when dropped from rest , its kinetic energy is 21J 2/3 of the way towards the ground? The mass is 5

### physics

A body of mass 2 kg is dropped from the top of a tower of height 100m. If the acceleration due to gravity is 10 m/s2 calculate the K.E at the end of 5 seconds

### physics

need help can someone please tell me Electricity is often converted into other forms of energy. List 3 examples.

### Physics

how far to the nearest tenth of a meter can a runner running at 7.9 m/s run in the time it takes a rock to fall from rest 65 meters?