# physics please HELP !

74,851 results, page 52-
## Physics

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

A car initially moving at 15 m/s accelerates at 4.5 m/s2 over a distance of 10 m. Find the final velocity? -
## physics

calculate the period of a ball tied to a string of length 1.9 m making 1.5 revolutions every second -
## physics

Probability of getting two heads among 4 coins Complete the columns r Pr rPr (r - r̄)2Pr 0 1 2 3 4 sum -
## physics

Probability of getting two heads among 4 coins for r = 0, 1, 2, 3, 4 find values of Pr, rPr, (r - r̄)2Pr and sum of r -
## applied physics

if a DC motor uses a775 coulombs of charge in 15 seconds,how much current is produced -
## physics

Write down the unit in which reaction rate is measured in this observation? Equation is Zn(s)+I~ZnI -
## Physics

A 1.15 kg block slides down a 19.0 m long 29.0° incline at constant velocity. How much work is done by friction? -
## Physics

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

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

Will a cyclist coast farther if the lamp connected to his generator is turned off? Explain. -
## PHYSICS

A race car's velocity increases from 3.6 m/s to 32.4 m/s over a 5-s time interval. What is its average acceleration? -
## Physics

Aircraft with acceration of magnitude of 42.5 m/s. If starting from rest how long will it take to travel a 2.6 km runway? -
## physics

Calculate the total energy of 2.0 kg object moving horizontally at 10 m/s 50meters above the surface. -
## Physics

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

the speed of the train increased from 15 mi/hr to 25 mi/hr in distance of 500 ft. calculate the average acceleration in ft/s^2 -
## Physics Help Please!

A microwave oven operates at 2.80GHz . What is the wavelength of the radiation produced by this appliance? -
## Physics

At what other angle (other than 45 degrees) could a gun be fired to travel the same horizontal distance Is the answer: There is not one? -
## Physics

On a dt graph if there is a curve from 1 decreasing to 1.2 in an interval does is the velocity and acceleration + or 9? And is it slowing down or speeding up or neither? -
## Physics

How might the poor fellow stranded in the desert benefit from a pair of Polaroid sunglasses? -
## physics

Find the electric flux through each surface. (Use any variable or symbol stated above along with the following as necessary: ε0.) -
## Physics

Can measuring the time between seeing the lightning and hearing the thunder really tell you how far away the lighting struck? If so, then how does it work? -
## physics

calculate the work done in lifting a 300N weight to a height of 10 m with an acceleration 0.5m/second square. -
## physics

Explain the changes in frequency with respect to changes in mass, length tension on sonometer bridge. -
## physics

if a ball is thrown down at an inital speed of 22 m/s, what will be its position after 2.8 seconds? acceleration is 9.8 m/s squared -
## Physics

How much work must be done to bring three electrons from a great distance apart to 1.0 * 10^(-10)m from one another (at the corners of an equilateral triangle)? -
## physics

using well labelled diagrams,briefly describe how you would determine the density of an irregular object -
## physics

calculate the period of a ball tied to a string of length 1.9 m making 1.5 revolutions every second -
## physics

Bob jumps into a pool, after he stops moving and becomes stationary i the water. What happens to his k energy? -
## physics

a 0.03 mol sample of helium is taken through a cycle. the temperature of state A is 400K. calculate V. -
## physics

How long is a rocket in the air if it is shot at an angle of 55¢ª with an initial velocity of 25 m/s and traveled for 88 m -
## Science physics

How would the voltage output be affected if the armature is made to spin faster? -
## physics

What is the resultant displacement when a ship sail 200km north and then 150km west -
## physics

would someone in a lift feel lighter or heavier as it accelerated upwards? explain your answer. -
## physics

If a spring is compressed 2.0 cm from its equilibrium position and the ncompressed an addition 4.0 cm, how much more work is done in the second compression than in the first? -
## physics

using ideas of torque and center of gravity explain why a ball rolls down a hill -
## physics

calculate the impulse to stop a 1500kg car moving 90kmper hours -
## Physics

How does the conservation of mechanical energy explain why a planet in an elliptical orbit changes speed? -
## physics

In the figure below, qA = 6.0 µC, qB = 2.6 µC, qC = 1.3 µC, dAB = 4.00 cm, and dAC = 3.00 cm. Determine the magnitude and direction of the net force on qA -
## physics

what must be the mass of the log to be lifted up by the hand, if the muscle cross sectional area is 17 cm^2? -
## Physics

consider the circuit in the figure. find the current in the 13 ohm resistor. Answer in units of A -
## Physics

If a 65 kg sprinter can accelerate from a standing start to a speed of 12 m/s in 3 s, what average power is generated? -
## physics

A standard 1 kilogram weight is a cylinder 48.5 mm in height and 52.0 mm in diameter. What is the density of the material? -
## Physics

If an 80-kg sprinter can accelerate from a standing start to a speed of 10 m/s in 3 s, what average power is generated? -
## physics

define the term torque or moment of force. Give its units and dimensions -
## College Physics

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

Calculate the average speed (in km/h)of Larry, who runs to the store 3.6 kilometers away in 40 minutes. -
## Physics

A 1.21 kg block slides down a 25.0 m long 25.0° incline at constant velocity. How much work is done by friction? -
## Physics

The electron-volt is _____ than the SI unit for the same physical quantity. a. smaller b. greater -
## Physics

What happens when you plug more equipment into apower board in terms of it's resistance and current. Explain. -
## physics

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

Find the gravitational force of attraction between two balls each weighing 10 kg,when placed at a distance of 1 meter apart -
## physics 101

A 72.9 kg man is standing on a frictionless ice surface when he throws a 1.6 kg book at 11 m/s. -
## AP Physics

A 1200 kg car is moving at 33 m/s then has the brakes applied at a deceleration of 6.1 m/s. How far will it move before stopping? -
## Physics

What is the peak current through a 400–W room heater that operates on 120–V AC power? -
## 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

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

A 50 cm diameter wheel rotates through 25 radians. How do I figure out the amount of distance it will move? -
## physics

Describe an experiment to determine the boiling point of a small quantity of a liquid -
## Physics

A horse on a merry-go-round is 20 ft from the center and travels at 10 mph. What is its angular speed? -
## 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 car traveling at +6.3 m/s accelerates at the rate of 0.65 m/s^2 for an interval of 2.2 s. Find vf . Answer in units of m/s -
## physics

How much current flows through two resistors with resistances of 10 Ω and 20 Ω that are connected in series and to a 10 V power supply? -
## physics

The density of a solid ball with a mass of 231 g and a volume of 110 cm^3 is ____ g/cm^3. -
## Physics

A dog is running at 9.1 m/s for 7.8 km. How long did it take him to arrive at his destination? (Give answer in seconds) -
## physics

Devise a method for measuring the coefficient of friction between two surfaces using an inclined plane -
## physics

What will be the magnitude of work if a force of 25N pulls a stone through distance of 5m in its direction ? -
## Physics

When calculating delta Tsample,why is th initial temperature taken to be 100 degrees Celsius -
## Physics

Why are the armature and field windings of an electric motor usually wound on an iron core? -
## physics

When the experimental set up is immerse in water of refractive index n=1.5.what will be the charge in beta? -
## Physics

What would the percent error of the experimental value of g be if the accepted value is 9.8 m/s^2? The slope equation is y=.5001430132x-.0109639087 -
## physics

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

What are differences and similarities of the electric charges (+ and -) and the magnetic forces (North and South)? -
## PHYSICS

What is the change in momentum of a car weighing 1500 kg when its speed increases from 36 km/h to 72 km/h uniformly? -
## physics

determine the energy of a photon radio wave electromagnetic radiation. i know which formula to use 6.64*10^-34 what -
## 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

What is the angular momentum (in J*s) of a mass of 1.45 kg which completes an orbit about a point 23.0 meters away every 5.30 seconds. -
## Physics

A bean jumps off a table and when it reaches have its height it has a speed of 10 m/s, how high does it rise? -
## 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 rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released. -
## Physics

What is the smallest a flat mirror can be while still being able to see your full reflection? I need to show my work/explain. Can anyone help me? -
## Physics 11U

can a initial velocity from the average acceleration formula (Aav=Vf-Vf/t) be negative? -
## physics

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

At what distance would the repulsive force between two electrons have a magnitude of 8.50 N? I have no idea how to do this problem... can someone help me please... 3x10^-4/8.50? -
## physics

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

compare and contrast sound and electromagnetic waves in terms of types, speed, etc. -
## physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc. -
## physics

compare and contrast sound and electromagnetic waves in terms of types, speed, etc. -
## 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

5. What is the electric potential at the center of the square shown in the figure below? Assume that q1 = 1 x 10-8 C, q2 = -2 x 10-8 C, q3 = 3 x 10-8 C, q4 = 2 x 10-8 C and d = 1 meter. -
## 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

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

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

What must be the orbital speed of a satellite in a circular orbit 740 km above the surface of the earth? -
## physics

Which parameter of a projectile depends on the horizontal as well as the vertical component of velocity of projection? -
## Chemistry Physics

What is the wavelength of an electromagnetic wave with frequency 50.0 MHz? Am I starting this problem like this? 3.00*10^8/50*10^6 =6*10^12 -
## 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

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

what pressure would you expect if the gas in the flask were heated to 150 degrees celsius? -
## Physics

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