Physics Waves And Oscillations Level: High School
If 10 kg is supported by the tension in the string of 10 m in length and 20 gram in mass , what is the speed of the wave along the string ?
Physics Waves And Oscillations Level: High School
If two crests of the wave arrive every 10 seconds and the distance between adjacent crests is 3 m . find the speed of the wave .
Physics Waves And Oscillations Level: High School
A block attached to a spring oscillates along a horizontal frictionless floor with the equation of motion .a. Amplitude.
b. where the block is @ t = 2 sec
c. frequency and speed.
d. spring constant if the mass of block is 2 kg
e. force on the block @ 2 seconds.
f. velocity of block @ 2 seconds.
Physics Waves And Oscillations Level: High School
A 5 kg block extent a coil spring on 3 cm from equilibrium . If the same spring is set to oscillate while 15 kg object is attached , find the frequency of the motion .
Physics Force & Laws Of Motion Level: High School
Block of mass 10 kg is pushed along a rough horizontal surface with coefficient of Kinetic friction u = 0.5 by the applied force 200 N .What is the acceleration of the block ?
If the object moves at a constant speed , What is the value of the applied force ?
Physics Kinematics Level: High School
Vector
A plane travels between 4 airports . First 150 mi 30 deg West of North , then 300 ml 45 deg East of North , and finally 200 mi due East .What is the total displacement as a Vector ?
Physics Kinematics Level: High School
Projectile Motion
A ball is thrown up @ V0 = 10 m/s (UP) from the roof of a 100 m high building . What height did the ball reach before it stopped and what is the time it took for the ball to reach the ground ?
Physics Kinematics Level: High School
A car accelerates from rest @ A =5 m/s2 for 2 seconds , then travels 50 m @ a constant speed . What is the total time and total distance ?
Physics Force & Laws Of Motion Level: High School
A horizontal stream of water his a wall at the rate of 45.0 gm/sec . The water has a speed of 4.8 m/sec . Assume the water has zero velocity after it hits .(a) Find the size of the impulse exerted on the wall per unit time (ie , in one second ) . N sec
Find the size of force exerted on the wall .
Physics Work,Power & Energy Level: High School
How many kilometer per liter will a obtain if its engine is 25 percent efficient and it encounters and average force of 1000 newtons ? Assume the energy content of gasoline is 40,000,000 joules per liter (J/L) .
Physics Work,Power & Energy Level: High School
If you push a lawn mower across a yard in 10 seconds, how does the work done compare with pushing it across the same yard in 20 seconds ? Explain why ?(b) How does the power for 10 seconds compare to the power for 20 seconds ?
Physics Work,Power & Energy Level: High School
What various forms of energy are present as you shoot a bow and arrow ?
Physics Work,Power & Energy Level: High School
If a sprinter running at a speed of 10 meters per second could convert his/her kinetic energy into upward motion . how high could he/she jump ?
Physics Work,Power & Energy Level: High School
As you catch a fast-moving fastball , why is it wise to move your hand in the direction of the ball’s motion ? Explain in terms of work and energy .
Physics Work,Power & Energy Level: High School
A 1000 kilogram car is lifted 1 meter .a. What is the potential energy with respect to the floor ?
b. If the car is lifted 2 meters high, what is the new value of potential energy with respect to the floor ?
c. Explain the following : Potential energy of an object varies linearly with position (height) .
