Physics Electrostatics Level: High School
If 500 J of work are required to carry a charge particle between two points with a potential difference of 40 V, What is the magnitude of the charge on the particle ?
Physics Work,Power & Energy Level: High School
A 60 kg sled slides o the bottom of a 25 degree slope of length 20 m . A 100 N friction force acts on the entire distance . What is the total energy at the top and the bottom . What is the velocity of the sled at the bottom ?
Physics Work,Power & Energy Level: High School
A 20 kg sled is pushed up a 34 degree slope to a vertical height of 140 m. A constant friction force of 50 N acts for the entire distance . Calculate work and change in potential energy .
Physics Force & Laws Of Motion Level: High School
A 10 kg block is dragged 20 m by a parallel force of 26 N . If (mu) = .2, What is the result of work and what acceleration results ?
Physics Force & Laws Of Motion Level: High School
(a) A two masses are arranged with one of 50 kg , on a frictionless table , and the other of 30 kg attached by a cord handing off of a table . Find the acceleration .(b) Using the following equation : Friction = (mu) N or (mu) mg . Assume the table has friction and opposes the system . Find the acceleration of the system .
Physics Force & Laws Of Motion Level: High School
Find the acceleration and tension of the rope in the figure at “click here”
Physics Force & Laws Of Motion Level: High School
A 12 kg mass is placed on a 40 degree (frictionless) incline opposed by a 20 kg mass on a 25 degree frictionless incline . The two masses are attached via a rope . Determine the acceleration and tension of the rope .
Physics Work,Power & Energy Level: High School
Consider the incline plane with friction shown in the figure at “click here” , Calculate the velocity of the block at the bottom of the plane using the force analysis , and then calculated using the work-energy concept .
Physics Work,Power & Energy Level: High School
Using the work energy concept determine the velocity of a block sliding down a frictionless incline plane . The velocity at the bottom of the plane is related to a specific height H, from which the block fell . Calculate the velocity . Remember we assume that the block and the ground below are frictionless .Now take into consideration friction . The friction coefficient is .30 . How far will the block travel past the incline taking into account friction ?
Physics Work,Power & Energy Level: High School
Calculate the work performed by a constant force of 80 N pushing a block a distance of 6 m along a horizontal surface at 40 degrees ,
Physics Force & Laws Of Motion Level: High School
Consider a double incline plane with angles , masses , and coefficient of friction s shown in the figure at “click here” . Calculate the acceleration of the system and the tension of the cord .
Physics Kinematics Level: High School
Projectile motion
A soccer player kicks a ball at an initial velocity of 9 m/s . A second player standing 4 ft away who is 3 ft tall nearly gets hit with the ball but luckily it just misses the top of his head . Please find the time of flight the ball was in the air before hitting the ground , Find the maximum height of the ball reached , the range the ball traveled , and the velocity of the ball at its mid-flight position .
Physics Units Level: High School
The pressure reading from a barometer is 742 mm Hg . Express this reading in kilopascals , kPa .
Physics Units Level: High School
When one gram of gasoline burs in a car’s engine , the amount of energy given off is approximately 1.03 x 10^4 cal . Express this quantity in joules .
Physics Units Level: High School
Units
Analysis of an air sample reveals that it contains 3.5 x 10^-8 g/l carbon monoxide . Express the concentration of carbon monoxide in lb/ft^3 .