3. Light travels at the speed of 186,000 miles/second. How far does light travel in 4 hours? Hint: distance=speed x time, remember to enter the units! a. Express your answer in miles. b. Express your answer in kilometers. c. Express your answer in feet. d. Express your answer in yards.
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- 3. Cyclist A travelled 60 kilometers while Cyclist B reached as far as 180,446 feet. a. Who travelled the farthest? b. What is the difference between their end points? 4. Electricity travels at about the speed of light, 186,000 miles per second. How many meters it can travel every minute? 5. Per hour, a 30-kW diesel generator consumes 8.80 gallons of fuel. If the generator was turned on for 150 minutes, how many cubic meters of diesel is needed? 6. Juan exerts 75 kg of force to push a box. How much force in Newton did he apply? 7. 75N is equal to how much lb force? 8. Convert 1107 ft-lb into kJ.1. Put each of the following numbers into scientific notation. a. 0.00000584 # of s. d? b. 245 000 000 # of s. d? c. 0.0000705 # of s. d?In 1983, at its General Conference on Weights and Measures, the National Institute of Standards and Technology used the speed of light to define the length of a meter. One meter is the distance light 1 travels in second. 299,792,458 a. How many meters does light travel in 1 second? Light travels | m. b. What is the speed of light in kilometers per second? The speed of light is km/sec. c. In England in 1956, the speed of light was meașured as 299,792.4 ± 0.11 kilometers per second. Is the speed of light that was used by the General Conference on Weights and Measures within this range? The speed of light (select) within.this range.
- A light-year (ly) is the distance light travels in one year (at speed of 2.998 ×× 108 m/sm/s ). An astronomical unit (AU) is the average distance from the Sun to Earth, 1.50 ×× 108 kmkm.1 yearyear = 3.156 ×× 107 ss. a. How many meters are there in 6.50 lyly ? Express your answer using three significant figures. b. How many AUAU are there in 6.50 lyly light-year? Express your answer using three significant figures.II. SCIENTIFIC NOTATIONS Write only the number for your answer. Do not include the unit. 1. 106,000,000,000 years 2. 0.000000009 meters 3. 0.000027 second 4. 900,000 kilograms 5. 0.0000000205 units Pls refer to the picturesThe speed of light is 2.9979×108 a.Convert this speed to miles per second. Express your answer using three significant figures. b. Convert this speed to inches per nanosecond. Express your answer using three significant figures. c. Convert this speed to kilometers per hour. Express your answer using three significant figures. please answers in 3 significant figues
- 1. On the moon, the time, in seconds, it takes for an object to fall a distance, d, in feet, is given by the function f(d) = 1.11va. a. Determine f(5) and explain what it represents. b. The South Pole-Aitken basin on the moon is 42,768 feet deep. Determine a reasonable domain for a rock dropped from the rim of the basin.eferences Mailings Tell me Review View La v AaBbCcDdEe AaBbCcDdE AaßbCcDdE E- Av Normal Title No Spacing 1. Number 0.02010 has how many significant figures? a. 2 b. 3 C. 4 d. 5 e. Could be 3 or 4. 2. Which of the following numbers is written in correct scientific notation? a. 56.4 x 102 b. 0.192 x 105 C. 2.34 x 10-34 d. 9.19 x 10-3.1 e. 8.29 x 10-3 3. When a ball is thrown vertically upwards in the air, acceleration the ball experiences: a. Increases. b. Decreases. C. Increases, and then decreases. d. Decreases, and then increases. e. Remains the same. 4. Two cars, A and B, travel in the same direction on a highway. At one moment, car A has a greater velocity than car B. This means at that moment: a. Acceleration of car A is greater than that of car B. b. Acceleration of car A is less than that of car B. c. Acceleration of both cars are equal. d. Only the magnitudes of the acceleration of both cars are equal. e. There is not enough information to draw any conclusions regarding…1. Unit conversion You travel 300 kilometers on 20 liters of gasoline at $4.00 per liter. About how many dollars did it cost to drive a mile? There are 1.609 km in 1 mile. 2. Power analysis For a given amount of energy, be able to calculate how long it can power something (how long can X Joules power a device that uses Y Megawatts, for example). 3. One-dimensional Motion Ask yourself this question: which kinematic equation would you use to solve for the an object if you knew and any four of the five kinematic quantities and choose in the right equation (A) Ar=v₁t+at² (B) Ar=₁+t (C) vf = v₁ + at (D) Av=v² + 2aAr MacBook Pro of ? Be able to pick
- The meter is the standard unit of length for physics. Which of these is the current way we define that standard? Based on a metal bar serving as a length "standard " that is kept by the National Institute of Standards and Technology (NIST) in the U.S. Based on the average distance from the Earth to the Sun. Based on the diameter of the Earth. Precisely how far light travels in 1/299792458 second.1. Find the percent uncertainty of 300±5 cm. How will you write the value of the measurement? 2. How do you write the following numbers in scientific notation or power of ten notation? a. 0.000123 b. 3,141,600,000 c. 1,005,000 d. 0.000000007 e. 100,000,000 3. Determine the number of significant figures in the following measurements. a. 0.00624 b. 300.1 c. 62,000.00 d. 1.0100 e. 10.01 4. Convert the following measurements to the mks(m-kg-s) system of units. a. 20 g/cm3 b. 100 km/hr c. 980 cm/s2 d. 0.5 kg/cm 5. Using dimensional analysis, check which of the following equations is or are correct. a. d = (1/2)at b. mgh = (1/2)mv2 c. a = v2/tThere's an apocalypse and you are sealed inside a rectangular room with dimensions (6.0 ± 0.1m) x (8.0 ± 0.1 m) x (3.0 ± 0.1 m).1. What is the air volume in the room? What is the uncertainty?2. How many hours before you run out of air? (Look up how much air you need per hour and/or how concentrated the oxygen must be for you to be able to breath.) What is theuncertainty?