phy

330 results

phys

Find the kinetic energy of a particle with a mass of one gram moving with half the speed of light. Compare the answer with the one you would find using the nonrelativistic formula. Ans in units of x 10^13. http://hyperphysics.phy-astr.gsu.edu/hbase/relativ/releng.html

electric engineering - bobpursley

Hi bob: I have a follow up question fo my previous post under heading electrical engineering If you could help me that would be great! :-) see the other post which briefly explains the drawings here: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.html

Physical Science

What are the 4 nuclear forces? Out of the 4 which one is the strongest and which one is the weakest? Thanks http://hyperphysics.phy-astr.gsu.edu/hbase/forces/funfor.html THANK YOU As a side note, these are not nuclear forces. They are the four fundamental forces in nature, ...

Physics - Mechanics

A body is supported by a spiral spring and causes a stretch of 1.5cm in the spring. If the mass is now set in vertical oscillation of small amplitude, what is the periodic time of oscillation Doesn't angular frequency= sqrt (k/m) ? where k= mg/.0015 or 2PI/T= sqrt (g/.0015) ...

PHY

Steps of the scientific method

Phy. Ed

What is weight transfer in exercise?

PHY

VECTOR A has a magnitude of 55. Ax is 26. What are the two possibilities for Ay?

phy

is the net force on venus is zero?

phy

A=ax+by and B=cx-dy If a = 3 , b = 4, c = 5 and d = 2. Find the direction of -A (in degrees): relative to +x

Chemistry/Physics

Calculate the translational kinetic energy of O2 at a) 300. K b) 1000. K Speed is not given. Do I need to find the average speed first? The formula I'm using is Ek= 1/2m v^2 I notice I'm not given mass in the problem either. Would I use molar mass? You are on a tangent. You ...

phy

vector B has a magnitude of 186. By is 0. What are the two possibilities for Bx?

PHY

Explain whether or not my results 9.876m/s^2 verify that g=9.8m/s^2

PHY 171

How does a derivation differ from an experiment or theory?

physics

pease answer my phy questions urgenntly

phy 105

What is meant by a students BP reading 120/70 mm Hg.

Science

Under what circumstances, if any, will a converging lens form an inverted image of a real object? Under what circumstances, if any, will a diverging lens forms an erect image of a real object? http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/raydiag.html#c1

PHY

Is that true the net force on the exit sign is 25N

Phy. Sci

A phase change form a gas to a soild?

phy. science

what normally warms up faster when heat is applied?

phy science

A wave has a speed of 230 m/s and a frequency of 25 Hz. What is its wavelength?

phy 105

Derive the equation T = 2pi(l/g)^1/2. That's period of motion.

Phy 1004

A= 50.0 lbs due East, B=100Lbsdue North. A+B= R,R=?

phy ed

What is the greatest benefit the body receives from cardiorespiratory fitness?

phy

at what projection will the range of a projectile equal to 2 times its maximum height?

phy 210

List advantages and disadvantages of various research methods

phy

a car rolls down an incline starting from rest A graph

phy

How much heat is required to raise the body temperature of a 60.0-kg woman from 37.0° C to 38.2° C?

Phy. Sci.

What are the forces on two charges of +0.43 C and +1.4 C, respectively, if they are separated by a distance of 3.7 m?

phy

The thermal capacity of 10g of a substance is 8 calories. the specific heat is in J/kg-K

phy

At what projection angle will the range of a projectile equal to 3 times its maximum height?

phy

why archimedes principle lab has more percentage errors or discrepancy than expected?

Phy. Science

What is the state of matter when non-convective rain leaves the cloud?

phy 101

the velocity of a body performing simple harmonic motion is given as what

phy

A piece of plastic barely floats in water. If it has a mass of 20g, what is its volume?

phy 111

what are the dimension of power(time rate of change of expending energy)

english,maths,chem,phy,bio,agric,civic,etc

What are the equations of motion.

chemistry

What causes surface tension? Please and thanks for the help. intermolecular forces, that is , molecules attracting other molecules, and "holding fast" together. Here are a couple of pretty good sites where you can read more about it. http://en.wikipedia.org/wiki/...

phy

What mass of steam at 100°C must be added to 1.00 kg of ice at 0°C to yield liquid water at 15°C?

phy

Calculate the average translational kinetic energy of a nitrogen molecule at 27 degree celcius

phy.

how for apart two praton be if the elactrostatic force between then is equale to the weight of elactron.

phy 101

if he travels 7km N 30 degree E and 10km east find the resultant displacement

phy

what assumption have you made in performing the free fall lab experiment and analyyzing the results?

phy

is that true or false A rock is thrown straight up into the air At the peak its acceleration was zero

phy

Your instructor asks you to compare positive and negative reinforcement and explain your conclusions in class. What will you report?

phy

Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin

PHY 2

How many electrons per second pass through a section of wire carrying a current of 0.70A?

phy

with an average acceleration of -0.50 m/s^2, ho wlong will it take a cyclist to bring a bicycle with an intitial speeed of 13.5 m/s to a complete stop?

phy

Tinny insects such as mosquitoes can seat on the surface of water. Which physical principle makes this possible?

phy

. Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.

phy

Three blocks are suspended at rest by the system of strings and frictionless pulleys shown in the figure below, where W = 29.0 N, and è = 26.6°. What are the weights w1 and w2?

science

During space flight, astronauts often refer to forces as multiples of the force of gravity on Earth's surface. What does a force of 5g mean to an astronaut? If Earth were twice as massive but remained the same size, what would happen to the value of g? http://hyperphysics.phy-...

winterWx

Compute the rms speed of a nitrogen molecule at 31.0°C. At what temperature will the rms speed be half that value? At what temperature will the rms speed be twice that value? T = 31 C = 304 K Mass M = 28 g/(6.02*10^23) = 4.65*10^-23 g = 4.65*10^-26 kg The average kinetic ...

PHY

A drag-racing car accelerates forward because of the force exerted on it by the road. Why, then, does it need an engine? Explain. what is the answer plz

phy

A sled is initially given a shove up a frictionless 27.0° incline. It reaches a maximum vertical height 1.45 m higher than where it started. What was its initial speed?

science

How do we identify or interpret when to get the screen away or towards the mirror in different situations? Please tell me diff. cases---phy practicals

physics

hi can somebody help me with this?? a solenoid of length L and radius R carries a current I in its N turns. what is the total energy stored in the magnetic field within the solenoid? Compute the inductance L using the solenoid formula. You should be able to find the formula in...

Phy

98N-T=10a T-18.89N=3a I worked on the problem and I end up getting two equations but now I have to find T and a. For some reason, I cant solve it. Thanks

phy

is that true faster objects have a greater acceleration than slower objects?

phy

Why gravitional force and centrietal force is same between earth and moon?

phy

Pulling up on a rope, you lift a 4.05 kg bucket of water from a well with an acceleration of 2.50 m/s^2. 1-What is the tension in the rope?

Phy

When light passes from air to glass, the light may change direction due to refraction. T or F?

phy

9. what is the relationship between the force and distance in an inverse square law? does force= the two charges?

phy

A baseball is hit nearly straight up into the air with a speed of 24 m/s. (a) How high does it go? (b) How long is it in the air?

phy 111

two forces act on a point object as follows:100N at 170 and 100n at 50

phy 111

two forces act on a point object as follows:100N at 170 and 100n at 50

phy

Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.

phy

Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15.

phy

Jane, looking for Tarzan, is running at top speed (4.3 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

Phy 231

an 18-wheeler travels down the highway with a speed of 50 km/hr. each wheel has a 30 cm radius and a mass of 16 kg. what is the total kinetic(translational and rotational) energy of all 18 wheels?

phy

A 72.7 kg student runs up the stairs of a football stadium to a height of 11.9 m above the ground in 10.1 s. (a) What is the power of the student in kilowatts?

Phy

what can have a varying velocity and varying speed

PHY

The coefficient of static friction between hard rubber and normal street pavement is about 0.68. On how steep a hill (maximum angle) can you leave a car parked?

Phy 231

A CD-Rom starts from rest and undergoes uniform angular acceleration until it reaches 26,000 rpm in 0.25 s. Through what angle does it rotate during this time?

phy

A scuba diver and her gear displace a volume of 71.0 L and have a total mass of 64.0 kg. (a) What is the buoyant force on the diver in sea water?

phy

In a capacitor, you have two plates, one is connected to a battery but other is not, how the other plate become charge ups.

phy

A major-league catcher gloves a 92 {\rm mi}/{\rm h} pitch and brings it to rest in 0.15 {\rm m}. 1-If the force exerted by the catcher is 803 {\rm N}, what is the mass of the ball?

phy

A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m. 1-If the force exerted by the catcher is 803 N, what is the mass of the ball?

phy

A major-league catcher gloves a 92 mi/h pitch and brings it to rest in 0.15 m. 1-If the force exerted by the catcher is 803 N, what is the mass of the ball?

phy

At what temperature will the root-mean-square speed of oxygen molecules have the value of 640 m/s? 1 kilomole of oxygen has a mass of 32kg.

phy

A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. how high above earth? acceleration?

PHY SCI

A race car goes around a circular, level track with a diameter of 1.00 km at a constant speed of 90.0 km/h. What is the car's centripetal acceleration in m/s^2?

phy

A good scientific theory is one that has survived extensive scrutiny by the scientific community, but even so, why do we say that science does not conclusively prove anything.

phy

A golfer gives a ball a maximum initial speed of 37.0 m/s. 1-What is the highest tree the ball could clear on its way to the longest possible hole-in-one?

phy science

a 20,000kg railroad car is traveling at 3m/s when it collides and couples with a second, identical car at reat. What is the resulting speed of the combined cars?

phy

A string of natural length L extends to a new length L' under tensile force F. If Hooke’S law applies, the work done in stretching the spring is ------------

phy sc

A rectangular barge, 5.6 m long and 3.0 m wide, floats in fresh water. Suppose that a 370-kg crate of auto parts is loaded onto the barge.

phy

A jet has a speed of 500m/s relative to the air in which it flies and is traveling north. There is a crosswind blowing from west to east at 100m/s. What compas heading does the plane appear to fly toward?

phy

an ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure. What will the millimeter read when the temperature is 20

phy

Boy throws a penny into a wishing well at a velocity of 2 m/s and at an angle of 45 degrees below horizontal. If the penny takes 1.3 seconds to hit the water, how deep is the well?

phy

A 10kg mass and a 2.0kg mass are connected by a light string over a massless, frictionless pulley. if g=9.8ms^-2, what is the acceleration of the system when released? (98ms^-2)

PHY

Standing on level ground, a person casts a shadow 1.41 m long when the Sun is 34.7 degrees above the horizon. How tall is the person? Give your answer in meters.

PHY

Ok...I know this is a stupid question, but I need help! Ok, here it is: An object that has more electrons than it does protons will be _____ a CL^-1 ion. repelled by attracted to unaffected by I know that opposites attract and that same repells, but I am doubting myself with ...

phy

is that true a block on a flat surface. The normal force on the block and weight of the block make up a third law pair.

phy

Two point charges have a total charge of 525 µC. When placed 1.15 m apart, the force each exerts on the other is 25.7 N and is repulsive. What is the charge on each? (Round your answers to the nearest µC.)

Phy

A 17kg child slides down a 2.7m -high playground slide. She starts from rest, and her speed at the bottom is 1.8 m/s. What is the change in the thermal energy of the slide and the seat of her pants?

phy

Calculate the electric power which must be supplied to the filament of of a light bulb operating at 3000K. The total surface area of the filament is 8×10−6m2 and its emissivity is 0.92.

PHY 231

Two masses M1 = 6.30 kg and M2 = 3.30 kg are on a frictionless surface, attached by a thin string. A force of 40.3 N pulls on M2 at an angle of 28.5° from the horizontal as shown in the figure. Calculate the tension T in the string.

phy

A 12N force is applied to a 20kg door If a frictional torque is present what will be the angular acceleration of the door The door is 80cm wide and I=1/3ml^2.

phy

During an isovolumetric process, the pressure on the gas is doubled and the amount of gas is tripled. If the initial temperature of the gas is 300k, what is thefinal temperture.

phy

A slab of ice floats on a freshwater lake. What minimum volume must the slab have for a 50.0kg woman to be able to stand on it without getting her feet wet?

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