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- The sun energy at a rate of 3.85×10 26 W by the fusion of hydrogen. About 0.7% of each kilogram of hydrogen goes into the energy generated by the Sun. (a) How many kilograms of hydrogen undergo fusion each second? (b) If the sun is 90.0% hydrogen and half of this can undergo fusion before the sun changes character, how long could it produce energy at its current rate? (c) How many kilograms of mass is the sun losing per second? (d) What fraction of its mass will it have lost in the time found in part (b)?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?Unginal number. A.) 149,600,000 B. 0.000000028 2 Move the decimal point to the right or the left to make the number between 1 and 10. Count the number of decimal places moved and note the direction. A. 1.49600000 = 8 places to the left B. 00000002.8 = 8 places to the right 3Rewrite the number deleting all extra zeros to the right or to the left of the decimal point.
- 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 pickYou and your mother travel from home to school to have your Covid-19 vaccination. From your house, you walk 400 meters East, then 300 meters North as shown in the map. Analyze the map and answer the questions that follow. 1. What was the total distance that you traveled from home to school? A. 250 meters B. 300 meters C. 400 meters D. 700 meters 2. What was your displacement upon reaching the vaccination site in school? A. 250 meters B. 250 meters Northeast C. 300 meters North D. 400 meters East 3. If you and your mother will walk on the same path to return home after the vaccination, what will happen to your distance and displacement? A. The distance and displacement will become zero. B. The distance and the displacement will become equal. C. The distance will double, and the displacement will become zero. D. The distance will become zero, and the displacement will double.8. State the following quantities in powers of 10 notation. a. 15 megawatts b. 17 kilotons c. 28 micrograms d. 0.2 millimeter 9. Using the powers of 10 notation and conversion factors, calculate the number of seconds in the average lifetime (70 years) of a human. 10. Using the powers of 10 notation and conversion factors, calculate the number of seconds you have lived.
- 8. Below is the table of time and distance traveled by a train Time(min.) Distance (m) 0 0 2 2000 4000 6000 6000 10000 12000 4 6 8 10 12 e. Plot distance against time f. Describe and interpret the graph line Calculate the slope of the line during the first 6 min. and the last 2 min. h. What is the speed between t = 6 min. and t = 8 min.?Of the following, the longest is a a. 1.2 miles b. 1610m c. 63350 Inches d. 1760 yards 2 The maximum speed in SLEX is 100 km/H. How many miles will you travel per minute? 3. You are doing a project by mixing some concrete, and you've calculated according to the directions that you need six gallons of water for your mix. If you use the two-liter empty bottle of soda to measure your water, how many times will you need to fill it? 4. The density of seawater is 62.8 pounds/feet. How much is this density in kg/m³ 5. You want to check if the gold ring that your fiancée gave you is a "real gold". Upon weighing. the mass of the ring is 9.5 grams and using the water displacement method to determine the volume, and it overflow 0.6 mL. What is the density of your gold ring? Is the ring a real gold? Accepted density of gold is 19300 kg/m³.3. 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.
- Hi please answer the following question, the answer in the problem is wrong and this answer is wrong too6.25*10^-16 N please make sure to give the right answer. THank you.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/tWrite out the following numbers in full with the correct numbers of zeros. A. 718x10^4 B. 8.2x10^3 C. 7.2x10^-1 D. 5.72x10^3 E 4.51x10^-6