Physics Properties Of Matter Level: High School
Archimedes Principle
A 6-kg piece of metal displaces 1 liter of water when submerged . what is its density ?
Physics Measurements Level: High School
Find the density of a 5-kg solid cylinder that is 10 cm tall and has a radius of 3 cm .
Physics Kinematics Level: High School
A ball is thrown horizontally from the cliff at a speed of 10 m/s . What is its speed one second later ?
Physics Rotational Mechanics Level: High School
What is the tangential speed of passenger on a Ferris wheel that has a radius of 10 m and rotates once in 30 s ?
Physics Work,Power & Energy Level: High School
Calculate the number of joules of kinetic energy at 1-kg book has when tossed across the room at speed of 2 m/s ?
Physics Kinematics Level: High School
Relative Velocity
If raindrops falls vertically at a speed of 3 m/s and you are running at 4 m/s , how fast do they hit your face ?
Physics Kinematics Level: High School
One dimensional
What is the acceleration of a 20-kg pail of cement that is pulled upward (not sideways) with a force of 300 n ?
Physics Kinematics Level: High School
One dimensional
A car takes 10 s to go from v = 0 m/s to v = 25 m/s at a approximately constant acceleration . If you wish to find the distance traveled using the equation d = ½ at2 , what value should you use for a ?
Physics Properties Of Matter Level: High School
What is the liner density of a string if its length is 5cm and it had a mass of 20 g ?
Physics Magnetism,Magnetic Effects Of Current Level: High School
Magnetism
you have three iron bars , each of which may or may not be magnet . Each rod is painted black on one end and white on the other . You perform three experiments and find .The black end of bar A repels the white end of bar B .
The white end of bar A attracts the white end of bar C .
The white end of bar B attracts the white end of bar C .
Is bar C a magnet ? Explain you r reasoning ?
Physics Gravitation Level: High School
The electric force is much stronger than the gravitational force . Yet in determining the motions of planets and stars , the gravitational force is dominant . why ?Physics Waves And Oscillations Level: High School
The two waves on a strings which have the same wavelength, but different amplitudes and are out of phase . Draw what the string would look like if both waves were on the string at the same time .
Physics Waves And Oscillations Level: High School
The speed of sound in air is about 340 m/s . What is the frequency of a sound wave with a wavelength of 2 meters ? Is this audible ?
Physics Work,Power & Energy Level: High School
Conservation of Energy
You are driving an ordinary , gasoline-powered car on a level road . You stop by applying the brakes . Energy has not been created or destroyed ; what has become of the car’s kinetic energy ?Physics Properties Of Matter Level: High School
Pressure Law in Gases
A sample of gas is confined at constant volume in a can which can withstand a pressure of 5000 N/m2 . If the gas is initially at a pressure of 2000 N/m2 , and the sun warms the container from 20 degrees C to 80 degrees C , will the container leak ?