Kinematics
A hiker walks 3 km North then 4 km East. What is the hiker's distance?
7 km
What is the force on an object from a surface called?
Normal Force
A 1kg block moves west at 2m/s and a 3 kg block moves east at 2m/s. What is the momentum of the system? Include direction.
4 kgm/s east
Electric field lines flow from __________ to _________, and magnetic field lines flow from __________ to __________.
North to south; positive to negative
What kind of wave CAN be transmitted through a vacuum?
An electromagnetic wave
A hiker walks 3 km North then 4 km East. What is the hiker's resultant displacement? Include direction.
5 km NE
The force of skater 1 on skater 2 is 100N East. What is the force of skater 2 on skater 1? Include direction.
100 N West
What does the area under a force vs. elongation graph represent?
Spring constant (k)
Sphere 1 has a -10C charge and sphere 2 has a 6C charge. When they are touched then separated, what is the charge on sphere 1?
-2C
A stationary car's horn produces a 350Hz tone. As the car moves toward you, what will happen to the apparent frequency from your perspective?
The frequency will increase
What does the area under a velocity-time graph represent?
Displacement
What is the angle between two forces that would maximize their resultant force?
0 degrees
How much power is required to move a 10N box 12m in 5s?
In a parallel circuit, as more resistors are added, what happens to the total resistance?
Total resistance decreases
What is the speed of light in water?
2.26 E 8 m/s
A ball is dropped and is in the air for 10s. What is its final velocity?
98.1 m/s
A 5kg bucket spins in a circle of radius .7m at 10 m/s. What is the centripetal force on the bucket?
714 N
A 200 kg roller coaster starts at a 10m hill. What is its kinetic energy at the bottom of the hill?
19,620 J
Two 1kg spheres are 1m apart and the electrostatic force between them is 100N. If the distance between them is doubled, what is the new electrostatic force?
25 N
What is the energy of a photon that is emitted by an electron dropping from level f to level c in mercury? (Keep your answer in eV)
2.84eV
A ball is thrown at 45 degrees. If it is increased to 50 degrees, what happens to the range and maximum height?
A 10 N object slides down an 60 degree incline at constant speed. What is the normal force acting on the object?
5N
A 100kg clown is fired at 15m/s West from a 500kg cannon. What is the recoil speed of the cannon? Include direction.
3 m/s East
A 2-ohm and 3-ohm resistor are in series with a 10V battery. What is the current across the 2-ohm resistor?
2A
Name the force that a quark with composition udd does NOT interact with.
Electrostatic force