Physics!

73,661 results, page 47

Physics

How long does it take light traveling from the sun at 3.0 x 10^8 m/s to reach Jupiter, which is 780 x 10^6 km away?

physics

what force is necessary to stop a 20 g bullet moving at 200 m/s as it penetrates a wood at a distance of 4 m?

Physics

A nurse counts 76 heartbeats in one minute. What are the period and frequency of the heart's oscillations?

Physics

Find the maximum height reached by a ball thrown upward at a velocity of 95ft/s

Physics

How long does it take a motor cyclist to come to rest?which travels at 12m/s decelerates at 3m/s^2

physics

This isn't so much a question, but a query: What does this mean? K.E. = 1/2 mv2 I can do the homework on my own if someone lets me know. Thanks.

physics

what is the greatest acceleration can be generated by a runner if coefficient of friction between shoes and road is 0.95

physics

Calculate the watts of power expended when a force of 1.8 N moves a book 2.0 m in a time interval of 1.0 M/S

PHYSICS

a 1500kg sports car accelerates from 0 to 30 m/s in 8 seconds. Whaat is the power of its engine? Please help

Physics

Under what conditions would an applied force increase the Kinetic energy of an object?

physics

explain why a child on a swing comes to rest directly below the top of the swinng

Physics

If a shoe is dropped from a height of 40m, what is its speed after falling for two seconds?

Physics

Calculate the gravitational force between two identical 100-kg masses separated by 1 m.

physics

how much force can be applied to the top block without the blocks slipping apart

physics

how much force can be applied to the top block without the blocks slipping apart

physics

I am moving 3 blocks with a force of 3 newtons over a distance of 1 meter in 10 seconds. What is the power?

Physics

Using volume of a sphere, calculate the average density of Saturn (radius = 60,268 km).

physics

How far does a point on the circumference travel if the wheel is rotated through an angle of 26.2 rev?

Physics

Why do we see more mirages in southern states and in the summer than at other times or places

physics

What is the period and frequency of a 10-pound weight oscillating (as a pendulum) on a 5-meter-long rope?

Physics

Roads seldom go straight up a mountain, they wind back and forth. Explain why this is useful

Physics

What is the instantaneous speed 3 seconds into the journey of a car traveling at a constant velocity of 10 m/ s?

Physics

Find the velocity of microwaves having wavelength of 0.75m and frequency 2.75X10^10hz

physics

Your friend of mass 80 kg can just barely float in freshwater.Calculate her approximate volume.

Physics

A Brass rod 50.0 cm long expands 0.0734 cm when heated. Find the temperature change.

physics

What is the density of nitrogen gas (molecular mass = 28 u) at a pressure of 1.2 atmospheres and a temperature of 284 K?

Physics

Why is it that interference effects don't show up regularly in glass window panes with two surfaces?

physics ! HELP PLEASE !!!!1

what are the methods of computing the veolicty of a particle in one- dimensona motion from a graph ?

physics

What is the minimum work in joules needed to push a 1540 kg car 44.0 m up a 12.5 degree incline?

physics

a projectile is fired at an angle of 60 degrees with the horizontal and with the initital velocity of 80 m/s. What is the time of flight?

physics - help !!!!!!!!

The magnitude of a vector is always : - a positive number - greater than 1 - an integer - none of the above. Thank you

physics

The magnitude of a vector is always : - a positive number - greater than 1 - an integer - none of the above.

physics

Calculate the internal energy of 25.0 g of low-density oxygen gas (O2) at a temperature of 255 K.

physics

define black body, emissivity, solar constant in relation to heat transfer.

Physics

If a car delivers 76.2 hp of power, how much time will it take for the engine to do 5.78e5 J of work?

physics

Which of the following is forward biased? (i canna draw so plz manage wid dis) (0V)-------pn-------(-2V) (-4V)-------pn-------(-3V) (-2V)-------pn-------(2V) (3V)-------pn-------(5V)

physics

a gun shoots a potato from a height of 6 feet. how long does it take to hit the ground.

Physics 30

If a truck moving at 30km/hr accelerates at 2.5m/s^2 to 50 km/hr, what time (in sec) does it take? a. 2.22s b. 5.56s c. 8 s d. 28.8s

physics

how much torque do you exert if you push perpendicularly on a door with a force of 30 N at a distance of 0.85 m from its hinges

physics

what force must the woman in Figure 3.38 exert on the floor with her hands in order to do a pushup?

Physics HELP!!

What is the de Broglie wavelength of an electron that strikes the back of the face of a TV screen at 1/10 the speed of light?

Physics

A 70 g ball moves 45m/s. If its speed is measured to an accuracy of 0.10% what is the minimum uncertainty in its position?

PHYSICS

A car speeds up at 5m/s if the driver was already moving at 7m/s find his velocity after 3 seconds

Physics

By what distance must two charges of +2 C and +4 C be separated so that the repulsive force between them is 4.10 1010 N?

Physics

An ideal gas performs 453 of work and loses 45J of internal energy

Physics

The parabolic TV antenna receives electromagnetic waves from satellites. What is special about these rays?

physics

what is the net electrostatic force on the charge q3 -48ìc due to charges q1 (+78µC) and q2 (+50µC)

physics

How much charge passes through a cross-sectional area of a copper wire in 0.8 s if I = 3.5 A? 1 C

integrated chemistry and physics

If 2 blocks have the same mass which one has the greater acceleration?

Physics

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed

Physics

find the altitude change of a 10,000 kg fighter which climbs and in doing so loses 100 m/s of airspeed

PHYSICS

A BODY CHANGES IT'S VELOCITY FROM 20M/S UNTIL IT COMES TO REST IN 10 SECONDS.WHAT IS IT'S ACCELERATION

Physics

An object is thrown upward with a speed of 21.5 m/s. How high above the projection point is it after 2.06 s?

physics

What is the velocity of an object that falls from a cliff tot he ground which is 20,000 centimeters below?

physics

a 60kg sprinter accelerates from rest at 2.5m/s east for 4s. what force is acting and what is his final speed?

physics

a 333 hz and 337 hz tuning forks are struck simultaneously. whats will be the beat frequency?

physics

Calculate the speed of sound wave in air if its frequencies and wavelengths are 256Hz and 1.32m

physics

Consider the equation -mv0 +3mv0 = 4mvf. Where m and v0 are constants, Solve for vf. Simplify answer.

Physics

What will a spring scale read for the weight of a 75 kg woman in an elevator that moves upward with acceleration 0.30 g? w=?

physics

a car starts from rest and accelerates uniformly at 2m/s for 10second. what is its velocity at the end of 10 second?

Physics.

when an e- and a positron collide they're annihlated and their mass converts to engery. the energy released is? [1.64x10^-13 J]

Physics

Suppose the circular track in the figure below has a radius of 104 m and the runner has a speed of 3.3 m/s.

Physics

Suppose the circular track in the figure below has a radius of 104 m and the runner has a speed of 3.3 m/s.

physics

Doubling the frequency of a wave source doubles the speed of the waves. ( True or False)

physics

a 10,000hg car rounds a curve of radius 1200ft at 50mph what is its centripetal acceleration?

Physics

If you must stop your moving car in a hurry, should you slam on the brakes and lock them?

physics

If an engine produces a (mass flow rate) of 100kg/s of thrust, what is the force in Newtons?

Physics

How does the speed frequency distribution graph change for a given gas as the temperature is increased?

PHYSICS

2. How does the speed frequency distribution graph change for a given gas as the temperature is increased

physics

An 80 kg man on a 10 kg stretcher is being pulled upward with constant speed. What is the tension on the rope ?

physics 102

What are the wavelengths of electromagnetic wave in free space that have the following frequencies? (a) 3.00 10^19 Hz pm (b) 7.50 10^9 Hz cm

physics

i want a simple laboratory method of determining a young modulus of a long thine wire

Physics

A car travels in a straight line for 3.9 h at a constant speed of 83 km/h . What is its acceleration? Answer in units of m/s2

physics

Which has the greater acceleration, a car that increases its speed from 50 to 62 km/h, or a bike that goes from 0 to 12 km/h in the same time?

physics

At a certain instant a moving object comes to momentary rest. Is it accelerating at that moment?

physics

A bug completes one lap along the edge of a circular planter of radius 14.4 cm in 12.94 s.

Physics

A rollercoaster travels 135ft at an angle of 58.7 above the horizontal. How far does it move horizontally?

Physics

A car travels in a straight line for 4.8 h at a constant speed of 63 km/h . What is its acceleration? Answer in units of m/s 2

physics

A ball is dropped from the roof of a building. How much time does it take to reach a velocity of 15.4 m/s?

physics

what is the acceleration due to gravity at a distance of 2 earth radii abouve earths surface?

Physics

A ball was thrown straight up at 26.2 m/s then caught at the same place it was released. How many seconds was it in the air?

physics

A ball was thrown straight up at 20.7 m/s then caught at the same place it was released. How many seconds was it in the air?

physics

If motion of a particle of mass (m) is given by y=ut+1/2gt^2 (square).find force acting on it

physics

A 6.0 Kg object undergoes an acceleration of 2.o m/s squared. what is the magnitude of the net external force acting on it?

Physics

What is the speed of a hockey puck of mass 0.15 kg if it experiences a force 60 in N for the extent of a slap shot of 0.25 m?

physics

If a ferris wheel has the radius of 5 meters, and one revolution takes 32 seconds, what is its speed?

Physics

Identify the causes of conductive and sensorineural hearing loss. I have no idea. Please help.

physics

why one cannot find the north pole of the earth using only a simple compass

physics

what device could use th earth's magnetic felds to produce energy and how it would work?

PHYSICS ASAP!

A Football is kicked 66.6 meters in 5.39 seconds. What was the initial velocity? Magnitude and Direction

Physics

Janetjumpsoffahighdivingplatformwith ahorizontalvelocityof2.96m/sandlandsin thewater2.8slater. Howhighistheplatform ?Theacceleration ofgravityis9.8m/s2.

Physics

you throw a ball upwards in the air at a velocity of 80m/s how fast will it be moving at 3 sec?

Physics

Contrast the metric units of distance, time, and speed. Describe the relationship between them.

Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.

physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.

Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.

Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.

Physics

2. Contrast the metric units of distance, time, and speed. Describe the relationship between them.

physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?

physics

If a race car completes a 4mi oval track in 73.2s, what is the average speed in units of mi/h?

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