Physics FINAL

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1.
1 point
During a dart throwing experiment, 5 out of 6 darts land at the bottom of the target. Which of the following statements best describes the situation?
2.
1 point
Which of the following is NOT a significant figures rule?
3.
1 point
Given: 1 furlong = 660 ft and 1 mile = 5208 ft, Convert 1 furlong/day to miles/hour
4.
1 point
Which of the following statements is true?
5.
1 point
A train travels southeast from the station. If the train passes the 30.1 mile marker and the 175.5 mile marker in a time span from 21.7 minutes to 105.2 minutes, what was the average velocity of the train?
6.
1 point
Punxsutawney Phil (a famous groundhog) walks 6.25 feet north from his hole, turns around, walks 13.45 feet south, and backpedals north 8.35 feet. The total time is 7 minutes. What is his distance traveled?
7.
1 point
Punxsutawney Phil (a famous groundhog) walks 6.25 feet north from his hole, turns around, walks 13.45 feet south, and backpedals north 8.35 feet. The total time is 7 minutes. What is the displacement?
8.
1 point
A firework is launched from the Henley Street Bridge straight up at 53.6 m/s. It does not explode and returns to the bridge.
9.
1 point
Vector A has a direction of 237 degrees. Which of the following best describes vector A?
10.
1 point
A boy on a ladder aims his "Nerf" dart gun straight at the chest of a second boy hanging from a tree branch 5 meters away. At the instant the boy on the ladder fires is dart, the boy on the branch drops. With no air resistance, what happens?
11.
1 point
Vector A= 20m @ 90 degrees and Vector B= 15m @ 90 degrees. What is the resultant of Vector B - Vector A?
12.
1 point
A guy throws a baseball horizontally into a canyon with initial velocity of 37 m/s. How long will it take for the ball to hit the canyon floor 1609 m below?
13.
1 point
A human cannon ball launches with initial velocity of 27.6 m/s at 43.5 degrees and lands in a net on the same level as the cannon. What is the range of the human cannon ball (how far away is the net from the cannon?)
14.
1 point
A net force (F) accelerates a mass (m) with an acceleration (a). If the same net force is applied to a mass (m/2) the acceleration would be?
15.
1 point
A box is sliding on a frictionless surface and is stopped by a brick wall. If the box hits the brick wall with a force of 6512 N, what is the force applied on the box as it hits the brick wall?
16.
1 point
A 92.0 kg block is pushed across a frictionless table with force of 97.6 N at 0 degrees. What is the acceleration of the block?
17.
1 point
A traffic light hangs from wires that form 37 degree angles with the top of the light. If the traffic light weighs 100N, what is the magnitude of the tension in each rope?
18.
1 point
The Moon revolves around the Earth. What keeps it in motion around Earth?
19.
1 point
Which of the following correctly describes the interaction between the Earth and Moon according to Newton's Law of Universal Gravitation?
20.
1 point
Two stars in space are 1.2 x 10^7 m apart and have masses of 2.5 x 10^24 kg and 3.5 x 10^26 kg. What is the gravitational force between them?
21.
1 point
Increasing the area (width) of a current carrying wire, causes the resistance to ____
22.
1 point
Light bulbs A and B have wattages of 60W and 100W. If both bulbs have same operating voltage, which is true about their resistances?
23.
1 point
a PROTON is traveling eastward close to the surface of Earth. Assuming that earth's magnetic field is pointing North, the direction of the magnetic force on the proton is____
24.
1 point
A PROTON moves straight upward (away from ground) through a magnetic field that points west with a magnitude of 2.5 T. If proton moves with speed of 1.5 x 10^7 m/s and has a charge of 1.60 x 10^-19 C. What is the magnitude and direction of the Force?
25.
1 point
A container with mass 5 kg is lifted 8 m above the ground. What is the work done by gravity?
26.
1 point
A container with mass 5 kg is lifted 8 m above the ground. What is the work done by applied force?
27.
1 point
A container with mass 5 kg is lifted 8 m above the ground and then returned back to the ground. What is the net work done by gravity?
28.
1 point
A truck driver is trying his best to push a truck. After 50 minutes, and over 500 N of force later, the truck hasn't moved. How much work has been done?
29.
1 point
In science, work is defined by:
30.
1 point
How much power is necessary to do 50 J of work in 5 seconds?
31.
1 point
An object weighing 15 newtons is lifted from the ground to a height of 0.22 meter. The increase in the object’s gravitational potential energy is approximately
32.
1 point
As an object from some initial height falls freely, its kinetic energy
33.
1 point
A skateboarder is standing at the top of the half pipe (point A), he drops down and skates up to the other side (equally as high) (Point B). Which of the following most accurately describes energy at Point B? Assume no friction.
34.
1 point
A skateboarder is standing at the top of the half pipe (point A), he drops down and skates up to the other side (equally as high) (Point B). When the skateboarder is at the bottom of the ramp, before going back up, (Point C) Which of the following most accurately describes energy at Point C? Assume no friction.
35.
1 point
If a 10 kg object on a 5 m ladder falls straight down, what will be the KE as it hits the ground?
36.
1 point
If a 10 kg object on a 5 m ladder falls straight down, what will be the velocity as it hits the ground?
37.
1 point
Determine the Total Resistance of the given circuit
38.
1 point
Which of the following is the correct voltage and current reading over Resistor B?
39.
1 point
Determine the resistance of the given circuit
40.
1 point
Which of the following is the correct voltage and current over Resistor C?