10. Klay Thompson has an amazingly consistent 3 point shot. He consistently releases from let's say 3.0 meters above the ground to enter a hoop 22 ft away (note units). The hoop is 10 ft off the ground.

a. If he shoots with a release angle of 30 degrees, how fast is the ball as it leaves his hands?

b. The same shot is attempted, at the same angle, but bounces off the back of the rim. It went 0.15m past what he wanted. What was the speed on release for this shot?

c. (Opinion) Would you rather be able to do this problem via repetition and feel like Klay does? Or would you rather go through the numbers so that you could program a robot to shoot a ball better than Klay or Curry or Jordan?

( We are doing projectile motion right now )

I also I converted the feet to meters i noticed the hoop is 3 meters(rounded) and so is where Klay shoots his ball.

A parachutist bails out and freely falls 69 m. Then the parachute opens, and thereafter she decelerates at 2.6 m/s2. She reaches the ground with a speed of 3.3 m/s. (a) How long is the parachutist in the air? (b) At what height does the fall begin?

a) A child slides down a water slide at an amusement park from an initial height h. The slide can be considered frictionless because of the water flowing down it. Can the equation for conservation of mechanical energy be used on the child?

YesNo     

(b) Is the mass of the child a factor in determining his speed at the bottom of the slide?

YesNo     

(c) The child drops straight down rather than following the curved ramp of the slide. In which case will he be traveling faster at ground level?

following the curved rampdropping straight down     same speed in either case

(d) If friction is present, how would the conservation-of-energy equation be modified?


(e) Find the maximum speed of the child when the slide is frictionless if the initial height of the slide is 13.5 m. (Assume the child is initially at rest.)
m/s

For College Physics. Please explain in paragraph form. Please type it out as I cannot read some written hand writing

Respond to the following: In your OWN words DON'T copy from an online course.

Explain vector, scalar, speed, velocity, and linear acceleration. Also give examples.

A concrete highway curve of radius 84 m is banked at a 15.3 degree angle. What is the maximum speed with which a 1500 kg rubber-tired car can take this curve without sliding?

First of all, what is the relevant coefficient of friction? (It's 1)

What is the magnitude of the normal force acting on the car?

What is the maximum speed the car can take this curve without sliding?

Does this maximum speed depend on the mass of the car?

An eagle is flying horizontally at 5.2 m/s with a fish in its claws. It accidentally drops the fish. (a) How much time passes before the fish's speed quadruples? (b) How much additional time would be required for the fish's speed to quadruple again?

1-D Kinematics

Experiment 1: Free Fall

In this experiment you will drop the hex nut from different heights. You will explore how height from which the hex nut is dropped affects its falling time and its final velocity.

Procedure

1. a) Write down a hypothesis how height will affect the falling time of an object. (Note: use form: if…… then……)

2. b) Write down a hypothesis how height will affect final velocity of the falling object. (Note: use form: if…… then……)

3. Drop the hex nut from different heights. For each drop, measure the distance from the ground and the time the hex nut is falling down. For each height do at least three measurements of falling time and then calculate the average time.  

Include your measurements in Table 1.

4. Calculate final velocity of falling hex nut using equation:

v = v₀ + at   

Since the initial velocity (the one you start with) in this experiment is always equal to 0 m/s, then the equation you use for calculation is simply:

v = at

Example:

If average t = 2.5 seconds then,

    v = a (2.5 s)   

Since an object is in free fall, acceleration a is equal to gravitational acceleration g = 9.8 m/s².

Therefore,

v = (9.8 m/s²)(2.5 s) = 24.5 m/s

5. Include your calculated values of the final velocity in Table 1.

Data:

Table 1

6. Plot time versus height graph using your data from Table 1 (Note: independent variable is on the x axis and depended variable is on y axis)

Independent Variable: _____________

Dependent Variable: ________________

[include your graph here]

7. Plot final velocity versus height graph using your data from Table 1.

Independent Variable: _____________

Dependent Variable: ________________

[include your graph here]

1. Why don’t the short circuit and open circuit voltage produce power in a p-n cell?

2. The power supplied by a solar cell is proportional to its surface area. Using the flux of solar energy under AM1 conditions, estimate the power a 1-cm² solar cell will yield. State explicitly any assumption you make.

A) Sketch the position vs. time graph for the following motion. Starting at 0.5m from the detector, you moved away at a constant velocity of 3 m/s for 2 seconds, then stood still for 1 second and then walked toward the detector for 1 second at a velocity of 4m/s after which you stood still for 3 seconds.

B) sketch the velocity vs. time graph for the above description.

1. You and a friend are riding the subway, and sit at opposite ends of the car. You both count down from five, and then clap simultaneously, just as the train passes through a station. (It's an express train, so you don't slow down and stop at the station.)

   According to the predictions of special relativity, what would an observer on the subway platform observe as you passed through the station?

   		Your claps would not be simultaneous. One would occur before the other.
   		Your claps would occur at the same time.
   		Your claps would occur at the same time, but time would speed up for you, so they would occur more quickly.

2. Which of the following statements are true regarding light clocks and time dilation? (Select all that apply.)

   		If two observers are in relative motion, they will disagree about whose light clock is running more slowly.
   		Two light clocks are synchronized. They will remain synchronized even if one moves, because motion is relative.
   		A moving light clock ticks more quickly than a stationary one.
   		Because light clocks are just a way to measure time, and any clock could be synchronized with a light clock, the light clock thought experiment actually tells us that time itself slows down for moving objects.
   		A moving light clock ticks more slowly than a stationary one.

3. If I am stationary, and I see you move (from my point of view) at a speed of 25% of the speed of light, which of the following statements is true regarding how I will observe time passing for you?

   		I will observe time moving more slowly for you than for me.
   		I will observe time moving more quickly for you than for me.
   		Time will pass more slowly for you and for me, but I will not notice it because I am stationary.
   		I will measure no difference between the rate at which time passes for you and the rate that it passes for me.

Name three types of ways corruption of science can occur.
Given a scenario/example to support each way.

A 0.50-μF and a 1.4-μF capacitor (C1 and C2, respectively) are connected in series to a 22-V battery.

Part A: Calculate the potential difference across each capacitor.

Part B: Calculate the charge on each capacitor.

Part C: Calculate the potential difference across each capacitor assuming the two capacitors are in parallel.

Part D: Calculate the charge on each capacitor assuming the two capacitors are in parallel.

. A leading manufacturer of household appliances is proposing a self-cleaning oven design that involves use of a composite window separating the oven cavity from the room air. The composite is to consist of two high-temperature plastics (A and B) of thickness LA = 2LB and thermal conductivities kA = 0.15 W/mK and kB = 0.08 W/mK. During the self-cleaning process, the oven wall and inside air temperatures, Tw and Ta are 400 ºC, while the room air temperature is 25 ºC. The inside convection and radiation heat transfer coefficients hi and hr as well as the outside convection coefficient ho, are each 25 W/m2K.

(a) Define and sketch the system and identify heat entering and leaving the system on the sketch.

(b) Write the conservation of energy equation (or energy balance) for this system.

(c) Construct a thermal resistance circuit for the system defined in part (a).

(d) Write an expression for the total resistances entering the system.

(e) What is the minimum window thickness, L = LA + LB, needed to ensure a temperature that is 50 ºC or less at the outer surface of the window? This temperature must not be exceeded for safety reasons

A parallel-plate capacitor has square plates that are 8.20 cm on each side and 4.80 mm apart. The space between the plates is completely filled with two square slabs of dielectric, each 8.20 cm on a side and 2.40 mm thick. One slab is Pyrex glass and the other slab is polystyrene. If the potential difference between the plates is 88.0 V, find how much electrical energy (in nJ) can be stored in this capacitor.

1.Two point charges, q₁= +6 nC and q₂= +5 nC, are located on the x-axis at x= 0 and x=5.00 m. What is the electric field at point x=1.27 m? I got 33.4801 is ths correct?

2.Two point charges, q₁= +2 nC and q₂= -4 nC, are located on the x-axis at x= 0 and x=5.00 m. What is the electric field at point x=5 m? I got is this correct .7199?

3.Two point charges, q₁= +4 nC and q₂= -14 nC, are located on the x-axis at x= 0 and x=8 m. What is the distance of ZERO electric field from the positive charge?