Math/Physics

208,687 results, page 68

physics

an object moves along a circle of radius r. its start froam A and reaches B. what is the path length? what is the displacement?

Physics

Find the length of an inclined plane that will reach a platform 8ft high and form 16degree with the ground

Physics

Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s: (a) for an acceleration a= -5.2m/s^2 (b) for a= -6.7m/s^2

physics

Determine the stopping distances for an automobile with an initial speed of 95km/h and human reaction time of 1.0s: (a) for an acceleration a= -5.2m/s^2 (b) for a= -6.7m/s^2

physics

a cyclist travels at a distance of 10.0 km. in 30 min. after w/c he speeds up to 40 km/hr for 6.0 more mins. Find his average speed.

physics

a cyclist travels at a distance of 10.0 km. in 30 min. after w/c he speeds up to 40 km/hr for 6.0 more mins. Find his average speed.

Physics

How long does it take for the current in an circuit with = 150Ω and = 65mH to reach half its final value?

physics

A body of specific gravity 3.0 is immersed in water. What is the minimum force required to pull it out at velocity 2

physics

determine the speed of a transverse wave in a string with length 2m, mass 60g under a tensionof 500N.

physics

Determine the stopping distances for a car with an initial speed of 93 km/h and human reaction time of 3.0 s for the following accelerations: -4.00 m/s^2 -8.00 m/s^2

physics

Calculate the kinetic energy acquired by a 11- nail when it is struck by a 540- hammer moving with an initial speed of 4.9 .

physics

A uniformly accelerated particle covers three successive equal distances in time intervals t1, t2 and t3 respectively.

physics

A uniformly accelerated particle covers three successive equal distances in time intervals t1, t2 and t3 respectively.

Physics

If a car is travelling with a constant speed of 5.53 m/s in the Westward direction, what is the resultant force acting on it? Ignore friction

physics

How many times will the incident beam shown in Figure P25.3 (x = 1.10 m, y = 1.80 m) be reflected by each of the parallel mirrors? mirror on the right

physics

Jen sit on chair , the angle of lower leg 30 degree lenhg 40 cm. calculater center of mass

Physics

For the Law of Sines state the formulas, explain them in your own words, and draw a diagram illustrating one of them.

physics

A roller coaster travels 101 ft at an angle of 45.7 ◦ above the horizontal. How far does it move horizontally

physics

a waterfall is 122 m in height. calculate the rise in temperature if all potential lost is converted to heat.

PHYSICS

A roller coaster travels 101 ft at an angle of 45.7 ◦ above the horizontal How far does it move vertically

physics

A car traveling initially at 9.52 m/s acceler- ates at the rate of 0.609 m/s2 for 3.62 s. What is its velocity at the end of the accel- eration?

physics

If a flea can jump straight up to a height of 0.310 m, what is its initial speed as it leaves the ground? How long is it in the air?

Physics

Two vectors of magnitudes 25 N and 22 N act at right angles to each other. What is the magnitude of their resultant? Answer in units of N

physics

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?

physics

a car traveling 7.0 m/s accelerates uniformly at 2.5 m/s squared to reach a speed of 12 m/s. how long does it take for the acceleration to occur?

physics

a hockey puck is sliding freely across a pound of friction ice. What is the free-body diagram?

physics

if you raise the temperature of 1000 grams of water by 17 degrees, how many calories of energy would you have added in

physics

With an average acceleration of -.56 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.3 m/s to a complete stop?

physics

if you walk for 46 minutes at a speed of0.91 meters per second, how far will you have traveled? convert to km

physics

If I threw a ball vertically at an initial speed of 34.5 m/s, how many seconds would it take to reach its maximum height?

physics

Measuring in foot pounds of toque what pressure can the world’s strongest man exert by pulling on an object?

physics

A projectile is launched at a speed of 141m/s and an angle of 45 degrees. How fast is it moving at the top of its curved trajectory?

Physics

An object is dropped from rest. What is its instantaneous speed when it has been in motion for 5 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s

physics

A projectile is fired with an initial speed of 26.0 m/s at an angle of 30.0 above the horizontal. the object hits the ground 9.00 s later

physics

Bobpursley; you helped me with my question and I am a little stuck how would I find distance if I don't know time and vice versa?

Physics

An object traveling at a constant 20 m/sec in a circular path is changing its 1. velocity. 2. speed. 3. weight. 4. mass.

physics

A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .

physics

A projectile is fired straight up at a speed of 15 m/s. How long does it take to reach the top of its motion? The acceleration of gravity is 9.8 m/s2 .

Physics

five hundred kcal of heat is added to 2-kg of water at 80 degree Celsius. how much steam is produced?

physics

A car traveling initially at 7.41 m/s accelerates at the rate of 0.752 m/s 2 for 2.74 s. What is its velocity at the end of the acceleration? Answer in units of m/s

physics

the constant velocity of a ball is (3x+2y)m/sec. find the distance traveled in the y direction in 2 seconds (x and y are unit vectors)?

physics

An airplane flies north at a constant speed for 6h and covers a distance of 2400km. What is the plane's velocity? The acceleration?

physics

George takes off for a long jump at an angle of 28 degrees, and lands 6.9 m away. How fast was he when he jumped?

physics

The force of tension of a rope is 300N. If a man is 50 m above the ground, what is the longest time it could take him to get to the bottom?

physics

a basketball player achieves a hang time of 0.996 s in dunking the ball. What vertical height will he attain?

physics

Find the amount of work done by a labourer,who carries 'n' number of bricks of mass 'm' kg each to the roof of a house of height 'h'.

Physics

At the end of a race a runner decelerates from a velocity of 7.00 m/s at a rate of 0.500 m/s2. (a) How far does she travel in the next 14.0 s in meters?

physics

A certain car can go from 0 to 100 km/h in 10 s. If the engine delivered twice the power to the wheels, how many seconds would it take?

physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?

physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?

physics

if a todler is moving at 15m/s and covering a distance of 1900m. how much time does it take to cover this distnace?

physics

A 1.0kg ball initially at rest rolls down a plane at 35 degrees. pls i really need help

Physics

How long will it take a 1830 W motor to lift a 285 kg piano to a sixth-story window 16.0 m above?

physics

a pitches takes 0.10 seconds to throw a baseball, which leaves his hand at a velocity of 30m/s. the balls acceleration is?

physics

a pitches takes 0.10 seconds to throw a baseball, which leaves his hand at a velocity of 30m/s the ball's acceleration is?

Physics

A 3.0 cmm high object is placed 10 cm from a concave mirror whose radius of curvature is 10 cm. Where is the image located?

Physics

What minimum strength of magnetic field is required to balance the gravitational force on a proton moving at speed 6*10^6 m/s?

physics

Two asteroids, each with a mass of 6 million kilograms are attracted gravitationally with a force of 0.75 N. How far apart are their centers?

Physics

Approximately how long does it take for an oxygen molecule to diffuse across the interior of a cell that is 230 ì m in diameter?

physics

The specific heat capacity of pure water at 15.0 degrees celsius is 4184J/(kg.k). Convert this to kcal/(kg.k). pls help

physics

How much centripetal force is needed to keep a 0.20 kg ball on a 1.50 m string moving in a circular path with a speed of 3.0 m/s?

physics

How much centripetal force is needed to keep a 0.20 kg ball on a 1.50 m string moving in a circular path with a speed of 3.0 m/s?

physics

radius of the earth = 6.37 × 10^6 what is the speed of a 90.6 kg person at the equator? I know that F=m(v^2/r) but I don't know the force. Is there another equation that I'm missing or I'm using the wrong one? Thanks

physics

a hlicopter takes off and travles 300 km due north then returns to its landing field. what is its displacment?

physics

How long will it take a 1030 W motor to lift a 330 kg piano to a sixth-story window 13.0 m above?

physics

What is the minimum velocity needed for a roller coaster , traveling on the ground , to make it over a 112 m hill?

honors physics

What is the minimum velocity for a tolerant coaster traveling on the ground to make it over 112 m hill

science physics

i don't get how to solve this please help me Two resistors, 47 Ù and 82 Ù, are connected in series across a 45 V battery. What is the current in the circuit?

Physics

calculate the initial speed of a bicyclist whose final velocity is 20m/s if he accelerates at a rate of 2 m/s2 in 5 seconds?

physics

compute the least acceleration with which a man of mass 75 kg can slide down a rope which can sustain a weight of 580 N

physics

Time() 0 2 4 6 8 10 12 14 16 Velocity() 0 0 2 5 10 15 20 22 22 By measuring the slope of your curve, find the magnitude of the instantaneous acceleration at times = 9s i don't know how to solve it

physics

An airplane reaches a velocity of 71m/s^2 when it takes off. What must its acceleration be if the runway is 1.0km long

physics

Who developed modern periodic table? Descibe particle arrangements & movement for each phase of matter. (Thank you for helping me)

physics

An object is dropped from rest. What is its instantaneous speed when it has been in motion for 8 s? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s

College Physics

An electron and a proton are a distance r = 8.5 × 10-9 m apart. How much energy is required to increase their separation by a factor of 6?

physics

A 60kg boy is riding his bike to school. His acceleration is 15 m/sec^2. Determine the magnitude of the force he is exerting.

Physics- moles and gas laws

What is the volume occupied by 8.0 g of hydrogen under a pressure of 2.8 atm and a temperature of 300 K?

physics

When boiling water begins to turn to steam, which of the following remains the same in both the liquid and the vapor?

physics

When boiling water begins to turn to steam, which of the following remains the same in both the liquid and the vapor?

physics

An object is to be thrown through a window 3.5 m high a distance 7.5 m away. It is launched at an angle 70 degreesabove the horizontal.

physics

Why is there always a difference between the experimentally calcuated error for resistance, and the actual components tolerance value?

Physics

How much work is done by a girl weighing 450N while carrying a 2kg package up a 2m flight of stairs?

physics

5. An object that has kinetic energy must have A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these.

physics

5. An object that has kinetic energy must have A) momentum. B) acceleration. C) a force applied to it. D) All of these. E) None of these.

Physics

1. Explain how the ff. works: a. ultrasound imaging device b. photocopying machine c. microwave oven Thank you so much in advance! :)

principles of physics

Calculate the change in potential energy of 7.8 million kg of water dropping 50 m over Niagara Falls.

physics

jeritex mass is 60kg. if he climbs up the flight of stairs 13 meters high in 20 seconds, what is his power output?

physics

a race car's velocity increases from 4 m/s time interval, its average acceleration would be 10 m/s2 ? true or false ?

physics

if a race car's velocity increases from 4 m/s to 36 m/s over a 4 s time interval, its average acceleration would be 10 m/s 2 ? IS THIS TRUE ?

physics

If you pull one end of the rope 1.0 m downward with a 50 N force, find the height you can lift a 150 N load.

Physics

What is the magnitude of buoyant force acting on a 720 cm^3 toy submarine floating in fresh water? (D_water =1 g/cm^3)

Physics

Sunlight strikes a fused quartz surface. At what angle of incidence is the reflected light completely polarized?

Physics

What minimum speed does a 100 g puck need to make it to the top of a 5.9 m-long, 29 degree frictionless ramp?

physics

What is the power delivered by a motor lifting an elevator weighing 1250kg up 89 floors at 16.8 meters per second

Physics. PLEASE HELP!!

Find the power input of a force F=(7 N)ˆý + (3 N) ˆk acting on a particle that moves with a velocity v = (6 m/s)ˆý. Answer in units of W

Physics

Our eyes are sensitive to electromagnetic radiation with wavelengths from 400nm to 700nm. What is associated range of frequencies?

physics

A motorcyclist increases her speed along a straight road from 0 to 120 km/hr in 5 seconds. How much acceleration does she experience

physics

The grid in a high-vacuume triode is usually kept negatively charged with respect to the cathode so that the electrons may be

physics

Which of these two bodies gets its internal heat from nuclear processes? A) Both.B) Sun.C) Neither.D) Earth.

applied physics

Calculate the magnitude of the torque produced by two 25N forces that are 3m apart and in opposite directions

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