Physics Waves And Oscillations Level: High School
The range of human hearing isa) 40-40,000 hz
b) 10-10,000 hz
c) 20-20,000 hz
Physics Waves And Oscillations Level: High School
Which travels faster in air ?a) transverse wave
b) a fighter jet (f16)
c) a race car
Physics Current Electricity Level: High School
The resistance of a 25 watt bulb is _______ that of a 100 watt bulb , if both ran on the same voltagea) one half
b) four times
c) double
Physics Waves And Oscillations Level: High School
Sound
On the day when the speed of sound in air is 340 m/s , a lighting bolt is observed , and the resultant thunderclap is heard 5 seconds afterwards , About how far away was the lighting bolt ?a) 1700 m
b) 88000
c) 1020 m
Physics Force & Laws Of Motion Level: High School
Conservation of Momentum
Bullets are fired from and airplane in the forward direction of motion . The momentum of the airplane will be .
Physics Rotational Mechanics Level: High School
What, a torque acting on a body tends to produce ?Physics Force & Laws Of Motion Level: High School
A Muck truck and a Volkswagen traveling at the same speed collide head on . The impact force is ?Physics Force & Laws Of Motion Level: High School
Newton’s Second Law
In order to catch a ball , a baseball player extends the hand forward before the impact with the ball and then lets it ride backwards in the direction of the balls motion upon impact . Why, doing this reduces the force of impact on the players hand principally ?Physics Force & Laws Of Motion Level: High School
If the speed of a car is doubled , the impulse required to stop the car changes by a factor of ?
Physics Force & Laws Of Motion Level: High School
Conservation of Momentum
A gun is made of a super low weight but strong material . The bullet for the gun is more massive than the gun itself . For such a gun
Physics Force & Laws Of Motion Level: High School
A car traveling at 100 km/hr strikes an unfortunate bug and splatters it . The force of impact is ?Physics Force & Laws Of Motion Level: High School
A tennis ball bounces off a brick wall . Which of the following is true ? Impulse acts on the ball and impulse = mu-(-mu) . if it becomes off with the same speed .Physics Work,Power & Energy Level: High School
. A heavy truck and a small truck , (lighter ) roll down a hill . Neglecting the friction , at the bottom of the hill , the heavy truck will have greater ?Physics Force & Laws Of Motion Level: High School
A baseball player bats a ball with a force of 1000 N . The bat has a mass of .5 kg . The ball exerts a reaction force against the bat of ?Physics Force & Laws Of Motion Level: High School
If a person wanted to drag a 40 kg table across a floor the feet having a coefficient friction of 0.7 , how much force does the person need to exert to coefficient friction of 0.7 , how much force does the person need to exert to start the table sliding and why is the table easier to drag if the person lifts the end of the table slightly so that two legs are off the floor ?