Kinematics
Forces
Energy
Sound
Electrcity and Magnetism
100
Which of the following quantities has units of a velocity? (There could be more than one correct choice.)
A) 40 km southwest B) -120 m/s C) 9.8 m/s2 downward D) 186,000 mi E) 9.8 m/s downward
B,-120m/s E) 9.8 m/s
100
T or F , The reason your head feels like it jerks backward when pulling away from a stop sign is best explained by Newton's First Law.
True
100
A 30-N box is pulled upward 6.0 m along the surface of a ramp that rises at 37° above the horizontal. How much work does gravity do on the box during this process?
A) -140 J B) -110 J C) -1100 J D) -180 J E) 120 J
B)-110J
100
T or F, sound travels a greater horizontal distance at night
T
100
Left End
200
An Aliens is on another planet. They jump with an initial velocity of 4.6m/s and raise to a maximum height of 12.3m. What is the acceleration of gravity on this planet?
-0.860m/s^2
200
Jupiter is the largest planet in the Solar System with a mass of 1.899x1027kg and a radius of 7.149x107m. What would be the force of gravity on a 1 kg object on the surface of Jupiter?
25N
200
A 35-N bucket of water is lifted vertically 3.0 m and then returned to its original position. How much work did gravity do on the bucket during this process?
A) 90 J B) 0 J C) 900 J D) 180 J E) 45 J
B) 0 J
200
What do we call the sound that goes above 20kHz?
Ultrasonic
300
In section 5 of the velocity-versus-time graph, the object is
A. speeding up moving in the positive direction
B. slowing down moving in the positive direction
C. speeding up moving in the negative direction
D. slowing down moving in the negative direction
D. slowing down moving in the negative direction
300
If the force of gravity that the earth exerts on you is considered to be the action force then, according to Newton's third law, the corresponding reaction force would be the
a. normal force of the Earth acting upward on you b. force your feet exert downward on the Earth
c. force of gravity you exert on the Earth
d. force you exert on your feet, pressing them against the Earth
e. force of gravity the Earth exerts on everything else
C force of gravity you exert on the Earth
300
Jill does twice as much work as Jack does and in half the time. Jill's power output is A) four times Jack's power output. B) one-fourth as much as Jack's power output. C) twice Jack's power output. D) one-half as much as Jack's power output. E) the same as Jack's power output.
A) four times Jack's power output.
300
Which of the following is least likely to cause vibration in an aircraft?
a. Engine operation
b. Applying aerodynamic brakes
c. Energy added to airflow around the wings is greater than energy lost
d. Mass distribution
C.Energy added to airflow around the wings is greater than energy lost
300
A student connects four identical light bulbs in series to a 9.00-V battery. Each light bulb draws a current of 0.225 A for 150.0 s. What is the resistance of one bulb?
(a) 2.50 Ω (b) 10.0 Ω (c) 40.0 Ω (d) 20.0 Ω
B) 10 ohms
400
A driver approaches an intersection at a speed of 14 m/s [E] when the light turns amber. The driver applies the brakes to get the maximum stopping force without skidding. The car has a mass of 1500 kg, and the coefficient of friction between the tires and the road is 1.07. Ignoring the driver’s reaction time, calculate: The maximum deceleration of the car
-10.7N/kg
400
The first resonant length of a closed air column occurs when the length is 18 cm, If the frequency is 512 Hz, what is the speed of sound in air?
369m/s
400
Solve For V2
2.5 Volts
500
A ball is projected upward at time t = 0 s, from a point on a flat roof 90 m above the ground. The ball rises and then falls with insignificant air resistance, missing the roof, and strikes the ground. The initial velocity of the ball is 80.5m/s Consider all quantities as positive in the upward direction. The vertical velocity of the ball when it is above the ground is closest to
A) -81 m/s. B) -64 m/s. C) -48 m/s. D) -32 m/s. E) -97 m/s.
A) -81 m/s.
500
An 80 kg baseball player slides to a stop at third base. The coefficient of kinetic friction between the player and the ground is 0.70. His speed at the start of the slide is 8.23 m/s.
How long (in time) does he slide until he stops?
1.20 S
500
How many antinodes and nodes are there in a close-ended tube with a fifth overtone?
6,6
500
If the overall voltage is 100 V, find the current across the 300 ohm resistor.
https://drive.google.com/file/d/1dwpDfZ75CnkYmCN7N0bafdXeklDRd3WI/view?usp=sharing
31.008mA or 0.03108 A