Physics, 25.02.2020 01:06 jolayemihazeez97
You fix a point-like light source 3.0 m away from a large screen and hold a basketball 1.0 screen so that the line connecting the center of the light source and the center of the basketball is perpendic- ular to the screen. You observe a shadow of the basketball on the screen. Select two correct statements m away from the
a. Moving the light source away from the scr een will produce a larger shadow
b. Moving the basketball closer to the screen will produce a smaller shadow
c. Moving the basketball and the light source away from the screen (while keeping the distance between the a. Moving the light source away from the screen will produce a larger shadow. b. Moving the basketball closer to the screen will produce a smaller shadow. c. Moving the basketball and the light source away from the screen (while keeping the distance between the light source and the basket- ball fixed) will not change the size of the shadow d. Moving the light source up ll result in moving the shadow down e. Moving the basketball up will result in moving the shadow down
Answers: 3
Physics, 21.06.2019 23:00
For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.
Answers: 1
Physics, 22.06.2019 15:30
What is a costume plot? why is it important to a film or theater production?
Answers: 3
Physics, 22.06.2019 17:40
The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.
Answers: 1
Physics, 23.06.2019 00:00
You are a researcher for a golf club manufacturer. you are given two identical looking cubes of a metal alloy. you are informed that they are made of the exact same material, but one is crystalline, whereas the other is amorphous. it is your job to determine which one is amorphous this one is more stress-resistant and is useful in reinforcing golf clubs. which of the following is the best way to determine which is which? a. determine the density of each cube. the more dense one is the amorphous solid. b. melt both cubes and look for a broader range of melting temperatures. the one that melts over a broader range of temperatures is the amorphous solid. c. determine the density of each cube. the less dense cube is the amorphous solid. d. melt both cubes and measure the range of melting temperatures. the one that melts over a narrower range of temperatures is the amorphous solid.
Answers: 1
You fix a point-like light source 3.0 m away from a large screen and hold a basketball 1.0 screen so...
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