Current Electricity
Circular Motion
Dynamics
Statics/vectors
Gravitational Field Strength
100
How much energy is required to move a proton through a potential difference of 9 V?
W=1.44 x 10-18 J
100
What is the circumference formula?
C= 2(pi)(R)
100
Imagine a place in the cosmos far from all gravitational and frictional influences. Suppose you visit that place and throw a rock. The rock will:
Eventually come to a stop
Continue in motion in the same direction with constant speed
2
100
What is a vector?
A vector is a quantity that has magnitude and direction.
100
What is Gravitational Field Strength?
Gravitational Field Strength refers to the strength of the force of gravity around an object.
200
How many milliamperes does it take to make your heart stop beating?
100
200
What is tangential velocity?
Tangential velocity is the linear speed of an object moving along a circular path, specifically the speed at any given point on the circle's edge, and it's direction is always tangent to the circle at that point.
200
What is the net force equation?
Fnet=ma
200
What are scalars?
Scalars are quantities that have magnitude only, and they don’t care about direction.
200
What is Earth's Gravitational Field Strength?
g=9.8 N/kg
300
How much current do 3 million electrons generate when they pass a given point every minute?
8 x 10-15 A
300
A child swings a 0.03 kg ball on a 1.2m string, at constant speed, 10 times in 1 minute.
What is the period?
T=6s
300
What are two of the kinematic equations?
300
When you add vectors at 90 degrees what formula do you use?
A^2+B^2=C^2
300
What is the gravitational field strength at a point 3 times the Earth’s radius above the Earth’s surface?
g=.61 m/s^2
400
Is a light bulb a example of a resistor?
yes
400
Throwback: what is Newton's first law?
A object in motion stays in motion unless acted upon
400
A force of 35 N acts on a 10 kg object. Calculate the object’s acceleration.
a=3.5 m/s^2
400
Is this diagram in equilibrium?
F1 = 10 N
F2 = 6 N
No
400
Use universal gravity to calculate the gravitational field strength on the Moon’s surface.
g=1.62 m/s^2
500
What is the resistance equation?
R=pL/A
500
A car races at 20 m/s around a turn with a radius of 10 m. What’s its acceleration?
500
A force of 35 N to the right and a force of 15 N to the left act simultaneously on a 10 kg object. Calculate the object’s acceleration.
Which way will the object accelerate?
a=2 m/s^2 to the right
500
Yes
500
How will the force of gravity between two objects change if we double one of the masses?
If we double one of the masses Fg doubles.