Suppose you stars off 10 feet from a light bulb. You walk towards it and stop when it appears 25 times brighter. How many feet are you from the light bulb when you stop?
Suppose you stars off 10 feet from a light bulb. You walk towards it and stop...
Imagine that you turn on the lamp in your room that contains an incandescent light bulb and that you stand 1m from the light. Suppose further that your bulb is rated at 100 W. What is the intensity of the light that passes out through this sphere at this distance of say 1m? Now compare this to a milliwatt laser at the same distance away. How many times more/less intense is the laser beam to your eye compared to the...
a mob of pigs walk towards you at 7.00m/s. When they are 42.0m from you, you lift a frying pan and they begin to accelerate towards you with a constant rate of 2.00m/s2. How fast are they moving when they get you?
A light bulb is 3.00m from a wall. You are to use a concave mirror to project an image of the bulb on the wall, with the image 3.50 times the size of the object. HOW FAR IS THE MIRROR FROM THE WALL? WHAT IS THE RADIUS OF CURVATURE?
Suppose that two identical stars (they have the same total light output) are located so that star A is at a distance of 5 pc and star B is at a distance of 25 pc from Earth. How will star B appear, compared with star A? A star is at such a distance that its apparent magnitude (m) is 10 magnitudes fainter than its absolute magnitude (M). How far away is it? Three stars have the following apparent (m) and...
4. In proof testing of light bulbs, the probability that any light bulb will fail is 0.05. Suppose a box contains 10 light bulbs, all which are independent of one another. A box of light bulbs can be sold only if all its light bulbs work. (a) Let X be the number of failed light bulbs. What distribution does X follow? State and name the parameters (b) How many light bulbs would you expect to fail, and what is the...
Suppose we have a late-night bus and towards the end of the route, there are 3 passengers {P1, P2, P3} and 5 stops {S1, S2, S3, S4, S5} remain. Suppose further that each passenger is inebriated and is thus is equally likely to get off at any one of the stops. (i) We wish to list the set of outcomes in the sample space each of whose outcomes is an ordered triple of all three Sij for I-1,2,3, where Sij...
3. Suppose we have a late night bus and towards the end of the route, there are 3 passengers {P, Pz2 , P3} and 5 stops SI,S2,S3,S4,Ss, remain. Suppose further that each passenger is inebriated, and is thus is equally likely to get off at any one of the stops (i) We wish to list the set of outcomes in the sample space each of whose outcomes is an ordered triple of all three Sij for l=1,2,3, where Sij means...
4 10 points You send a flash of light toward the Moon. It bounces off a mirror and returns to you. You measure the time between when you sent the flash and when it returns to you and find that the whole process took 2.0 seconds. The distance to the Moon is (state your answer in kilometers and list the answer with at least three significant figures.) You can use 3x108 m/s as the speed of light (feel free to...
Please show each step!
alloon takes off 400 feet from a parking lot. The balloon rises at a rate of 10 feet per minute. A dog standing at the edge of the parking lot watches the balloon take off a. Draw a picture. Label any parts of the picture that do not change as the b. How fast is the distance between the dog and the balloon changing 30 minutes after the balloon took off? Add any variables that you...
Question D
C. In Regular Bus City, there is a shuttle bus that goes between Stop A and Stop B, with no stops in between. The bus is perfectly punctual and arrives at Stop A at precise five minute intervals (6:00, 6:05, 6:10, 6:15, etc.) day and night, at which point it immediately picks up all passengers waiting. Citizens of Regular Bus City arrive at Stop A at Poisson random times, with an average of 5 passengers arriving every minute,...