# Physics!

74,730 results, page 49-
## physics

A particle starts moving with acceleration 2 m/s2. distance travelled by it in 5th half second is..?? -
## physics

An automobile driver puts on the brakes and decelerates from 30.0 m/s to zero in 15.0 s. What distance does the car travel? -
## Physics

Is Gc (32.2 lbmft/lbfs^2) equal to gravity? I think it is, but I'm kinda confused about the whole concept. Could someone explain it to me? Thank you very much. -
## Physics

A ball is thrown straight up at 24.0 m/s. Ignore the effects of air resistance in your calculations.After 2.00 s? -
## physics

How long, in seconds, is required for a car traveling at a speed of 32 km/hr to travel 110 m? -
## physics science

The photoelectric effect occurs only when the incident light has more than a entain minimum -
## Physics

what is your power output if you climb a 2m ladder in 10 seconds? suppose your height is 565N. -
## Physics

Which force acts opposite of the direction of displacement of the object? I think it would be friction...but could it be spring? -
## physics

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

If a car rolls gently(vo=0) off a vertical cliff, how long does it take to reach 85km/h? -
## Physics

Find the change in the force of gravity between two planets when the distance between them is decreased by a factor of 4.7 -
## physics

a mass if 10kg move with a velocity of 4ms-1find it kinetic energy. -
## physics

how old would you be, when you returned from a trip while traveling at 99.5% C if your relatives that stayed at home, were 10 years older? -
## physics

A constant net force of 1500 N gives a toy rocket an acceleration of 2.5 m/s2. what is the mass in kg? -
## Physics

How does mass affect the motion of objects falling freely under the influence of gravity? -
## Physics

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees? -
## physics

In a certain right triangle, the two sides that are perpendicular to each other are 7.00 m and 8.30 m long. What is the tangent of the angle for which 7.00 m is the opposite side? -
## physics

distance a cannonball travels when shot horizontally with a velocity of 28.3 at 30 degrees? I'm not sure what formula I need to use. Please help. -
## physics

Find the final speed of the train assuming no friction. Answer in units of m/s -
## Physics

If a tuning fork puts out a tone at 440 Hz, what is its wavelength in air at 25 degrees? -
## physics

What is the average current through a conductor that carries 4 375C during a 2 min time period? -
## physics

a fire hose held near the ground shoots water at a speed of 6.4m/s, at what angle should -
## Physics

Emily rides her horse 48 km in 3 hours.What is her average speed in kilometers per hour? -
## Physics

The magnification of an object 2km tall where placed in 150m in front of a plane mirror is ? -
## Physics

A projectile is shot straight up from the earth's surface at a speed of 1.20 x 104 km/hr. How high does it go? -
## 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

c). at what speed does it hit the ground? d). what total length of time is the ball in the air -
## Physics - please check over

Could I please get some further assistance on a question I posted earlier? I'm not getting the correct answer and I'm not sure what I'm doing wrong. -
## physics

a40w motor conectedto a 9v battery can lift an object 40m in 10s -
## Physics

What would be the average velocity of an object falling 1.25m from the rest, just as it strikes the ground? -
## physics

a 2.1 weight receives 210 j of kinetic energy by a launcher, which is pointed straight up. -
## physics

an object takes 0.35 seconds to hit the floor, what height did it fall from? is the way to calculate it h = gt^2 / 2 so would it be = h = .5 * 9.8 * 0.35^2 -
## Physics

Where should most of the mass be for an industrial fly wheel? Why? can't find any thing about this in my book. need help answering this. -
## physics

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

The three vectors in the figure below have magnitudes a = 2.45 m, b = 3.15 m, and c = 15.0 m and angle θ = 36.5° find x component of vector a -
## Ap physics

If you are driving 108 km/h along a straight road and you look to the side for 3.0 s, how far do you travel during this inattentive period? -
## physics

calculate the total area of the walls of a room 5m long 4m wide and 2.5m high -
## PHYSICS

A 30 kg. balloon is filled with 100 m to the third power of helium. how much force is needed to hold it down? -
## Physics 11

A girl stands 2.5 m infront of a plane mirror. If she sees someone else 2.0 m behind her, how far is she from the image of that person? -
## Physics

It took a car driver 30min to travel a distance of 50km. What is the average speed? -
## physics

how long does it take a softball to cross homeplate at 43 feet if the ball is going 65 miles per hour? -
## physics

A 8.20 cm tall object is placed 30.0 cm in front of a concave mirror with a focal length of 4.20 cm. What is the magnification? -
## physics

Find the electric field at the folowing radii from the center of this charge configuration. -
## physics

2 balss,one of iron and the other of aluminium,will experience the same upthrust, when dipped in water when both have equal what? -
## physics

Which floats with most of its volume below the surface? A) None of these.B) An oak log.C) All of these.D) An iceberg.E) A mountain range. -
## Physics

If I dropped a bowling ball from the empyre state building, at what velocity would it descend? -
## Physics

During takeoff, a plane goes from 0 to 50 m/s in 8s. What is its acceleration? Halos fast is it going after 5 s? How far had it traveled by the time it reaches 50 m/s? -
## physics

Forces of 3 N and 4 N act the right angles on a block of mass 5 kg. Show that the resulting acceleration is 1 m/s². -
## Physics

a 100 N chandelier hangs from the ceiling on 8 chains. What is the tension force on each chain? -
## physics

Calculate a person's hang time if he moves horizontally 2 m during a 1.39 m high-jump. -
## physics

Wrap a cotton wool around a thermometre,will its temperature rise? Explain your answer please -
## physics

I need to know the resistivity of german silver wire. I've looked at a few Google sources and I've seen several different results. Anyone know which value I should use? -
## physics

In the ideal case of zero resistance, a ball rolling on a level surface will accelerate -
## physics

An airplane starts from rest and accelerates at 11.5m/s^2. What is its speed at the end of a 655m runway? -
## Physics

How fast must a plane fly at a latitude of 41.9° so that the sun stands still relative to the passengers? -
## physics

A person can jump to a height of 1.5m on surface of earth. Find the velocity with which he jumps. -
## physics (electric charges)

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :) -
## College physics

To what temperature will 7700 J of heat raise 3.0 kg of water that is initially at 10.0 degrees C? -
## physics

A car traveling at +7.2 m/s accelerates at the rate of 0.65 m/s 2 for an interval of 2.4 s. Find vf . Answer in units of m/s -
## physics

A ball strikes against the floor and returns with double velocity.In which type of collision is it possible? -
## physics

Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 5100 km above the earth's surface. -
## Physics

At a given temperature, what relationship appears to exist between a gas particle's mass and its speed? -
## Physics

What is the typical wavelength of an X-ray ? I searched google and I couldn't find it. If you know the answer I'd appreciate it . -
## physics

So if I have two light bulbs with different wattage how could I show what happens to them in series and parallel. The voltage remains the same. -
## Physics

How does the speed frequency distribution graph change for a given gas as the temperature is increased? -
## Physics help!!!

What potential difference is required in an electron microscope to give electrons a wavelength of 0.05 nm ? -
## physics dimensions

the displacement of a particles is given by S=A+Bt+Ct^2.deduce the values of the constant A,B,and C appearing in the equation -
## physics

how long does a car with an acceleration of 2.0 m/s^2 take to go from 10m/s to 30m/s?and show the solution how do you get the answer. -
## physics dimension

write down the dimensions of moment of inertia and surface tension coefficient. -
## physics (electric charges)

Hi, How can you charge an electroscope negatively? Is it by using a positively charged rod? Can someone please help me? Thank you :) -
## Physics

what is magnitude of the centripetal if the tangential speed of the car is 2.0m/s and the radius of the wheel is 83m -
## physics

find the angle of projection at the horizontal range is twice the maximum height of a projecyile -
## Physics

What is the wavelength of light that can cause a transition of an electron in the hydrogen atom from the orbit with n = 6 to n = 8?(answer in µm) -
## physics

determine the kinetic energy of a boy mass 40kg running with velocity of 3m/s -
## physics

two forces of 10N and 7N respectively are applied simultaneously to an object . The minimum value of their resultant is, in newtons? -
## physics

a car is uniformly decelerated from 90km/hr in a time of 10 sec calculate the 2 acceleration -
## Physics

If you are 2.0 s from being directly under a window that is 11 m above the sidewalk your standing on, and someone throws a water ballon will you get hit? -
## physics

A meteoroid is speeding through the atmosphere, traveling east at 15.5 km/s while descending at a rate of 10.6 km/s. What is its speed, in km/s? -
## Physics

A soccer ball is kicked with an initial speed of 27 m/s at an angle of 20° with respect to the horizontal. -
## physics

The diameter of the earth is about 7.6 x 10^3 miles. What is the linear velocity of a person, on the equator, in feet per second? -
## physics

Calculate the distance Michael will travel if he maintain an average speed of 9.4 m/s for 2.2 seconds -
## physics

if a race cars velocity increases from 4 m/s to 36 m/s over a 4 s time interval, it average acceleration would be 10 m/s2. -
## Physics

An electromagnetic radiation has a frequency of 5.00 X 10^14 Hz. Calculate its wavelength in a vacuum in metres and nanomatres? -
## Physics

A block of mass 8.1 kg is pulled to the right by an applied force of 76.2 N. If the acceleration is 0.84 m/s^2, how much friction must be present? -
## physics

What is the wavelength of the peak of the blackbody radiation curve for the human body (T = 310 K)? -
## Physics

is the average random kinetic energy of the molecules decreasing ? ( In cooling curve) -
## physics

What is the resistance of a 40 watt light bulb if it is it to full brilliance by a current of .33amps? -
## physics

Calculate the distance Michael will travel if he maintain an average speed of 9.4 m/s for 2.2 seconds. -
## physics

Which floats with most of its volume below the surface? A) None of these.B) An oak log.C) All of these.D) An iceberg.E) A mountain range. -
## Physics

As a rocket accelerates upward, its thrust remains constant but its acceleration increases. what is the cause of this? -
## physics

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

What is the work required to move a proton 1 cm along the 7 volt equipotential line? -
## physics

A drag racer accelerated from 0 to 475km/h in 4.88 s. Assuming a constant acceleration, how far did it travel? -
## physics

Calculate the velocity of a skateboarder who accelerates from rest for 6.7 seconds down a ramp at an acceleration of 6.5 m/s2 -
## 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

In a gas kept at a constant temperature, all molecules move with the same speed. True or false? -
## Physics

A cube of ice weighing 18 grams sublimes into vapor. How many liters of gas will you get? -
## physics

A bus moves from rest with a uniform acceleration of 2ms(square)for the first 10s. -
## physics

if an object is pushed along a rough horizontal surface and moves at a constant velocity, then... -
## physics

How much heat in KJ is needed to change 3.0 kg of ice at -10C into (superheated) steam at +150C ?