1. How might you demonstrate the existence of an electrical force? Explain
2. How might you demonstrate the existence of a magnetic force? Explain

Then for each circuit component tested, write a brief analysis of the component. Explain how you know whether it is "ohmic" or not. Report anything else you find interesting. If it is "ohmic," then attach the additional V –vs- I plot and report here the value of the resistance, as a confidence interval. Attach more paper if needed.

Testing Ohms Law

Component 1: Lamp

Component 2: Resistor

Component 3: LED

Component 4: Diode

1a. A 747 airplane starts from rest and reaches a takeoff velocity of 78.0 m/s due west in 5.50 s. Assuming a constant acceleration, how far has it traveled before takeoff? Please explain.

b. Use the component method of vector addition to find the resultant of the following two vectors (magnitude and angle): (show the calculations) A=21.0 km, 26 degree south of west B=38.0km, 30 degrees east of south

What's the speed of water wave?

I'm asking about constant number.

A rope of negligible mass is stretched horizontally between two supports that are 2.81 m apart. When an object of weight 4190 N is hung at the center of the rope, the rope is observed to sag by 39.6 cm. What is the tension in the rope?

A = 3, B = 9, C = 18. A (1.25+A) kg bowling ball is hung on a (2.50+B) m long rope. It is then pulled back until the rope makes an angle of (12.0+C) degrees with the vertical and released. Find the speed of the ball is at the lowest point. Give your answer in m/s and with 3 significant figures.

To what height would a 3.0 kg object have to be raised such that its gravitational potential energy would equal the kinetic energy it would possess if it were moving at 3.0 m/s?

1 Why is it cooler to wear a white shirt than a black shirt on a hot, sunny day?

2 On a hot day in your hot kitchen, you decide to work with the refrigerator door open in an attempt to have the refrigerator cool the room. Which of the following best describes the result of this decision? Explain your answer.

a It will cool the room very effectively

b It will cool the room, but inefficiently

c It will not change anything

d It will actually warm the room

3 Consider standing on a bathroom scale. How will the reading of the scale compare if you stand on one leg instead of two?

a It will show less

b It will show more

c It will show the same

4 Consider standing on a bathroom scale. What does a bathroom scale show?

a Mass

b Density

c Force

d Pressure

The hunt for Red October is on! (Remember the 1990 Sean Connery

why isn't it accurate to say static friction is the force that keeps objects from moving? describe a counter example like a box on a table

Topic: Magnetism and electromagnetic induction, faraday's law, lenz's law

Question: A magnet is held a little above the top of a coil. It is then dropped into and through the loop, north side facing down, and caught as it exits the loop. Assuming the magnet never touched the loop (zero friction), would its velocity after falling through the loop be greater, smaller, or the same as if it had been dropped freely (not through the loop)? Explain your answer using force concepts and using energy concepts.

Draw a labelled sketch showing how the eye works and which parts of the eye see variations of contrast, color and detail (include rods and cones in your sketch). What does the “blind spot” mean and where is it in the eye? Does the eye see an upright or an inverted image? How does the lens of the eye work? Is the lens static?

Consider an equilateral triangle with sides measuring 1.0 m in length. At each point of the triangle is a +2.0 ?C charge. Calculate the Coulomb force on each charge. Recall that forces are vectors and thus your answer will require a magnitude and direction for each of the three forces.

A mischievous young man riding a ferris wheel decides to release a beanbag as he passes the top point in the ride; at this point in the ride, the young man is traveling due West. The ferris wheel has a radius of 3.29   m and goes around once every 1.17  minutes \ . The bottom of the wheel is 1.11  m off the ground, so that the release point of the bag will be 7.69  m  off the ground.

A)What is the velocity of the bean bag just before it is released by the mischievous young man? Give magnitude and direction. Give the direction as an angle in degrees measured counterclockwise from due East, when looking North.

B)What is the acceleration of the bean bag just before it is released by the mischievous young man? Give magnitude and direction. Give the direction as an angle in degrees measured counterclockwise from due East, when looking North.

C)For how much time is the bean bag in the air?

D)The young man finds that the bag does not land directly under the point of release. How far does the bag travel horizontally as it is falling?

It would help if you explain too thanks