The sun produces energy via nuclear fusion at the rate of 4x10 J/s. Based on the proposed overall fusion equation, how long will the sun shine in years before it exhausts its hydrogen fuel? (Assume that there are 365 days in the average year.) Express your answer to one significant figure and include the appropriate units.

Q: What is its length?

A:

Q: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

A: 1 light year is the distance traveled by light in one year. 1 year = 365.25 days            = (…

Q: What is the speed of a car going v=1.000 mph in SI units? Notice that you will need to change miles…

A: As per the question, the speed of the car is v mph, we have to convert the speed of the car v in SI…

Q: The mass of an object is 5.68 x 10-28 kg. What is the mass in milligrams? Report your answer in…

A: Mass of the object is m =5.68×10-28kg

Q: 1-1. (a) List the SI units of length, mass, time, electric cur- rent, temperature, and amount of…

A:

Q: The plane carrying the supplies will be cruising at a constant velocity of 250 miles per hour…

A: The given values are,

Q: A surveyor measures the distance across a straight river by the following methods: Starting directly…

A: Given: Surveyor move along with the river (AB) = 100 m. Horizontal angle (θ) = 35

Q: State how many significant figures are proper in the results of the following calculations. Note…

A:

Q: But where do you derive the equation E=(K|q|)/r?  My book says E=(K|q|)/r^2.

A: According to general equation of electric field ,  E = kQr2

Q: Imagine you would like to estimate the effect of the amount of rainfall in a given month in a region…

A: Solution:-                    For this estimation , the econometic model as…

Q: An object is dropped from 282 cm height. What is its displacement?

A: Distance is length of path between two points , while displacement is length of shortest path…

Q: The graph below shows the number of grams of a radioactive element t days after it was first…

A: Given:  Graph of number of radioactive element in grams with respect to time in days. We have to…

Q: THE GREAT WALL OF CHINA IS APPROXIMATELY 21,196 KM LONG. IF A WALKING ROBOT WOULD WALK ACROSS IT AT…

A: time = distance/speed

Q: A particular frost-free refrigerator uses about 720 kWh of electrical energy per year.    Express…

A:

Q: The kinetic energy varies directly as the square of the momentum (?) and inversely as the mass (?).…

A:

Q: A plane leaves at 10:29 P.M and arrives at Las Vegas late the next afternoon at 5:41pm. Exactly how…

A: Given, A plane leaves at 10:29 P.M and arrives at Las Vegas late the next afternoon at 5:41pm.

Q: Part B is wrong FA=(2mw(L−x)+mbL)g/2L is the formula but I'm unsure which numbers to plug in where.

A:

Q: The amount of energy collected by a solar panel depends on the intensity of the sun's rays and the…

A:

Q: A patient’s temperature was 97.0 °F at 8:05 A.M. and 103.4 °F at 12:05 P.M. If the temperature…

A:

Q: a. The mean pressure of the surface of the Earth is 984 mbar, slightly less than the mean pressure…

A:

Q: Q2/ A thermostat control with dial markings from 0 to 100 is used to regulate the temperature of an…

A: Given that,The dial markings of a thermostat control which regulate the temperature of an oil bath=…

Q: A patient’s temperature was 97.0 °F at 8:05 A.M. and 101.0 °F at 12:05 P.M. If the temperature…

A: Temperature was 97.0 °F at 8:05 A.M.  And 101.0 °F at 12:05 P.M. Temperature at 3:35 P.M. = ?

Q: Suppose that a person eats a diet of 2392 Calories per day.  Convert this energy into…

A:

Q: The solar power per unit area at the Earth's distance from the sun--called the "solar constant"--is…

A:

Q: The doctor finally figures out wha is wrong with you and prescribes a medicine that will return you…

A:

Q: The speeds of fast motion objects is sometimes measured by the speed of sound, called Mach. 1 Mach…

A: Answer..

Q: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

A: Speed of light=3×108 m/s Light travels in a year=             3×108×365.25×24×3600 m…

Q: The total annual energy consumption in the US in 2020 was 92.9 quadrillion BTUs. How much mass (in…

A: The given total annual energy consumption in the US in 2020 was E = 92.9 quadrillion BTU since, 1…

Q: One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in…

A:

Q: A patient’s temperature was 97.0 °F at 8:05 A.M. and 102.0 °F at 12:05 P.M. If the temperature…

A: As the patient’s temperature change with respect to elapsed time was linear throughout the day so…

Q: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

A: We know, light travels at 3*108 m/s So, 1 light year = (3*10^8 m/s)*(3600 s/hr)*…

Q: , distances are often expressed in light-years. One light-year is the distance traveled by light in…

A: Given: Distance to a star is 5.1 light-year Find: Distance to star in meters.

Q: A light-year is the distance light travels in one year (at speed 2.998 x 10^8 m/s). (a) How many…

A:

Q: In astronomy, distances are often expressed in light-years. One light-year is the distance traveled…

A: Given: Distance to a star is 5.5 light-year There are 365.25 days in one year. To find the given…

Q: Which of the following correctly describes A=90090 in scientific notation (with correct sig figs)?…

A: Given values, A = 90090 E# represents 10 raised to the power of #.

Q: A typical sheet of paper is 8.5 inches wide and 11 inches long. Calculate the length of one sheet in…

A: First, we need to convert the length of the paper from inches to centimeters. We know that 1 inch is…

Q: In one of the videos I said that a typical American household uses energy at a rate of about 10,000…

A: Energy=10000joules

Q: For the remaining questions, you need to use Figure 1.4 to obtain the necessary orders of magnitude…

A:

Q: A patient’s temperature was 97.0 °F at 8:05 A.M. and 103.4 °F at 12:05 P.M. If the temperature…

A: GIVEN: Tem. at 8:05A.M. = 970F Temperature at 12:05P.M. =103.40F