# physics please HELP !

74,996 results, page 56-
## physics

How much potential energy does a 60kg skater have before she starts her ride, 12m above the ground? -
## physics

How center mass affects an arrows distance traveled (include source) -
## physics

if a block of wood dropped from a building has attained a velocity of 78 m/s how long has it been falling? -
## physics

find the acceleration of a 3 kg mass as it moves with a constant speed of 4 m/s along a circle of radius 2 m. -
## physics

What is the temperature of an ideal gas whose molecules have an average translational kinetic energy of 3.90 10-20 J? K -
## PHYSICS

A swimmer is capable of swimming at 1.4m at still water.caculate how far downstream will it smim across 180m? -
## Physics

If the period of the moon were 31 days while its orbit radius 3.8x10^8m, what would the mass of the Earth be? -
## physics

Why electric dipole moment between two charges points from negative to positive charge. -
## physics

A car has a velocity of 25m and accelerates uniformly to 45m/s in 10seconds.what is the acceleration? -
## Physics

A person stands 2.0 m away from the reflecting surface of a plane mirror. What are the image characteristics? -
## physics

how do you calculate the frequency of a 2.500 m long pendulum in Quito, Ecuador, where g= 9.780 m/s^2 -
## PHYSICS

A BALL MOVES ROUND A CIRCLE WITH RADIUS OF 20CM CALCULATE THE DISTANCE -
## physics

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

A spaceship has a momentum of 20,000 kg·m/s to the left; its mass is 500 kg. What is the magnitude of its velocity? -
## physics

A football is kicked with an initial velocity v=9i+12j. Find the speed in (m/s) of the ball after 2.4s A) 9.2 B) 10.8 C) 12 D) 15 -
## physics

What is the total mechanical energy of a 20 kg owl flying at 5.0 m/s through the air at a height of 25 m above the ground? -
## Physics

What happens to your tongue when you lick an aluminum ice cream scrapper just after it has been used? Does it stick to the scraper? Why? -
## Physics

What thrust does a 350 model rocket need in order to have a vertical acceleration of 14.0 on the Earth? -
## Physics

someone in a car going past you at the speed of 31m/s drops a small rock from a height of 1.5m. -
## physics

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

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

What is the magnitude of the electrostatic force on a +5 C harge 1.75 m to the left of a -2.5 C Charge? (show your work) -
## physics

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

I posted the question about the rain before and I understnad how to find componnets...but how would I do that without a given angle? -
## Physics

Calculate the power of a hair dryer that operates on 120V and draws a current of 10 A. -
## physics

what causes an object to experience an artificial gravitational acceleration in a rotating space station -
## physics

if W(a) and W(g) are workdone on a person by air resistance and gravity respectively, during the first 600m of his fall what is the relationship between W(a) and W(g) -
## PHYSICS

What is the inductance L of a 0.40 m long air-filled coil 3.2 cm in diameter containing 10,000 loops? -
## physics

Calculate the effective value of g, the acceleration of gravity (in meters/second^2), at 8600 km above the earth's surface. -
## PHYSICS

If the current in a 100 mH coil changes steadily from 25.0 A to 10.0 A in 375 ms, what is the magnitude of the induced emf? -
## 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

A man walks 5.0m due east and then 10.0m N30oE . Find his resultant displacement -
## physics

If a protonand an electron are released when they 2.0X10^-10m apart, find the initial accelerationof each of them. I know a=ke^2/mr^2 k = 8.99 x 10^9 e = 1.6 x 10^-19 r = 2.0x 10^-10 so what is the m ???? -
## physics

You can paddle at 4.5 km/h and the river is ﬂowing at 3 km/h. How far downstream will you be in 44 min? Answer in units of km -
## Physics

I want to become an astonomer or study astrophysics but I didnt do maths a level can I still do it? Is there any way you can help me or provide aN alternative -
## Physics

Calculate the average speed of the car in km/h, it can accelerate from 96.56 km/hr in 4.3 seconds. Distance is not provided -
## physics

why we cannot use visible light for studying the crystal structure using Bragg’s diffraction method? -
## physics

What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin? -
## physics

Yeah I know it is! But it's really confusing me and it's what my teacher wants. Say I was to pick a height of 25m and a Velocity of 20.0m/s, what would be my next step? -
## physics

A tuning fork produces a wave at 280 Hz and with a wavelength of 1.5 m. Calculate its velocity. -
## PHYSICS

How could you repair an electric fan that is not working properly? Apply scientific method. -
## Physics

What is the age in years of a bone in which the ratio 14C/ 12C is measured to be 2.3×10^−13? -
## Physics

90.0g of copper (c=390J/kg*oC) at 80.0°C are added to 270g of water at 20.0°C. What is the final temperature of the mixture? -
## Physics

How much energy in kilocalories is expended against gravity alone by a 75- kg man climbing 1500 m up a mountain? -
## physics

What is the frequency of the microwaves in a microwave oven? The wavelength is 12 cm. I have to give the answer in GHz -
## Physics

How much is needed to melt an ice cube, 3 centimeters on each side at 0 degree celcius? -
## PHYSICS

How is the evolution of animal like the long necked giraffe explained by Charles Darwin? -
## physics

If the resultant velocity is 29.7 m/s and is directed at an angle of 22 degrees, what are the horizontal and vertical components? -
## physics

What is the potential energy of a bear with the mass of 200 kg in 20 meter altitude of a mountain? -
## Physics

Air in a balloon does 50 J of work while absorbing 70 J of heat.What is its change in internal energy? -
## physics

a body is thrown downward with an initial speed of 20.0 m/s on earth. what is the acceleration of the object -
## physics

you drop a penny off the roof and it htis the water 4.2 seconds later, what is the height of the bridge? -
## Physics

A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him? -
## physics

find the force if f between charges of +100mc -50mc located 50cm a part? -
## physics

A car starts from rest and accelerates for 6.7 s with an acceleration of 1.6 m/s2 . How far does it travel? Answer in units of m -
## physics

An airplane flies toward 124° at 525 km/h. What is the component of the plane's velocity (a) toward 90°? km/h (b) toward 180°? km/h -
## physics

if the resultant of 2 equal force inclint to each other at 60° is 8root3N. Find the component forces? -
## Physics

A steel guitar string is 73 cm long and 0.15 mm in diameter. If it's under tension of 1.5kN, how much is it stretched? -
## Physics

At what projection angle will the range of a projectile equal to 5 times its maximum height? -
## physics

a 10-kg bos slides down a frictionless ramp with acceleration 3.6 m/s calculate the weight anlge? f ? -
## physics

Calculate the speed of a ball tied to a string of length 1.5 m making 4.6 revolutions every second. -
## physics

i need to investigate nichrome wire and a globe and i need to state which is an ohmic conductor. what will my method be?? -
## physics

How much heat must be absorbed by a 500 g pot of water in order to raise the temperature from 20„aC to 30„aC? -
## physics 2

1)what potential differences must be applied across across a 1500 resistor in order that the resulting current be 50.mA? -
## physics

Calculate the quantity of heat required to raise the temperature of 2.00 g of water 4.00◦C. -
## AP Physics

If you are driving 116 km/h along a straight road and you look to the side for 1.0 s, how far do you travel during this inattentive period? -
## Physics

How much does it cost to operate a 23-W porch light for 24 h if electric energy costs 8¢/kWh? -
## physics

A boy drops a mango from a tree it falls without rebound wat happens to its momentum -
## Physics

If an object has a work of 300J and a displacement of 20m, how would I determine the net force? -
## Physics

Someone here pls help me find the best animation of electrons and protons. Post here the link of the video, thank you. -
## physics

the speed of a bullet of mass is 40gram is 216km/h what is the kinetic energy in joule -
## Physics 1

What torque is needed to accelerate a 70Kg disk with a 20 cm radius from rest to 10 rad/s? -
## Physics

An object is shot upwards, from the ground, with an initial velocity of 120 m/s. How high will it be after 4.0s? -
## physics engg.

A deutron is moving with a speed of 2*10^8m/s. Find the wavelength of the matter wave associated with it? -
## physics

A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s -
## physics

a rock was thrown at the height of 50.0 m above the ground with an initial velocity of 20.0 m/s straight upward. -
## physics

Starting from the constant-acceleration kinematic equations, write a formula that gives xf in terms of t, xi, vf, and a. xf -
## Physics

How do you find the moment of inertia of an actual bicycle about an axis through the pedal crank? -
## Physics

What is the acceleration experienced by the tip of the 1.5 cm-long sweep second hand on your wrist watch? -
## physics

find the force if f between charges of 100mc -50mc located 50cm a part? -
## physics

what is the initial velocity (Vyo) of a projectile launched horizontally? why? i know that it is 0 m/s, but i don't know why/how to explain it. -
## physics

A 1.25-kg book in space has a weight of 8.35 N. What is the value of the gravitational field at that location? GIVEN: m = 1.25 kg W = 8.35 N Therefore, they want the acceleration. Would I use this equation g = Fg/m? -
## physics

a baseboard heater draws a current of 10.0A. How much charge passes through it in a time of 30 min? -
## physics

What’s the direction of the electric field caused at the point (–2, 3) by an electron located at the origin? -
## 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

What is the force necessary to accelerate an object with a mass of 115 kg and and an acceleration of 6 m/s2 (squared) east? -
## physics

Good job "Drwls", your answer to my bowling ball question worked. Way to go! -
## 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

If two forces act at a point making an acute angle between them, find the resultant. -
## physics

what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a. -
## Physics

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

What is the potential energy of a 150 kg diver standing on a diving board that is 10 m high? -
## Physics 1100

Find theta; and W in the figure below where w1 = 21.0 N, w2 = 34.0 N, and α = 64.0°, assuming that the arrangement is at rest. -
## physics

what force is required to make an object of mass 500g accelerate at 4m/s2 (sqaured) ? -
## Physics

Two charges +1C and -1C are placed at distance 1m apart ,each having masses 2kg respectively are released.what is the type of collision they experience? -
## Physics

A 68.5kg man is standing still on an elevator that isn't moving, what is the normal force on him? -
## physics

Your friend says his remote control car travels at a velocity of 1.5 m/s. What is wrong with that statement -
## physics

three point charges-1*10^-6,-2*10^-6,3*10^-6.one kept at corners of an equilateral triangle of side 1m.what is potential at centre -
## Physics

A 0.50 kg hammer is taken on a space mission. What is its weight on a planet where the acceleration due to gravity is 3.8 m/s2? 0.50 kg 1.9 kg 0.50 N 1.9 N -
## Physics

How would a physics expert respond to the following suggestions made by three airline executives? Write a script of the expert's response for performance in front of the class. Airline Exectutive A: Since the earth rotates from west to east, we could