Stan and Hilda can mow the lawn in 60 minutes if they work together. If Hilda works three times as fast as Stan, how long does it take Stan to mow the lawn alone? Group of answer choices 180 minutes 240 minutes 60 minutes 90 minutes 120 minutes

Q: If a source of energy such as a solar power plant provides 1 gigawatt of power, many joules is that…

A:

Q: The CANDU nuclear reactors in Pickering, Ontario have a power output rating of 3100 MW when all…

A:

Q: A student is riding a bicycle at a constant speed of 4.29 m/s on a level road. The mass of the…

A: Data provided:   Constant Speed (v) = 4.29 m/s Frictional and drag force (Fr) = 31.6 N Asked: The…

Q: Part A: A typical bolt of lightning carries billions of joules (1 GJ = 109 J) of energy, but…

A: Given that A typical bolt of lightning carries billions of Joules 1 GJ = 109 JEnergy, E = 8 GJ =…

Q: In 2017, solar panels on your author’s home generated 3849 kilowatt-hours (kWh) of electrical…

A: Energy generated by solar panels on author's home = 3849 kWh Energy consumed by the house at the…

Q: At a construction site, there is a pile of sand in the shape of a cone. The cone has a height of 5 m…

A: Height of the cone Base radius of the cone Density of the sand Gravitational Acceleration

Q: A student eats a dinner rated at 2 000 Calories. He wishes to do an equivalent amount of work in the…

A:

Q: Part A: How much work is done when you push a crate horizontally with 150 N across a 15-m factory…

A: A)The work done in pusing the crate is,

Q: give a specific example of a process that has the energy changes and transfers described. (For…

A: Assume that a gas is filled in a container which is not insulated to heat.

Q: In an attempt to conserve energy (and, let’s be honest, save some cash), Bob decides to ride his…

A: Let the speed of Bob on the ground ismph. Fill the table using the given information as follows:…

Q: e centroid method

A:

Q: In a sunny location, sunlight has a power density of about 1 kW/m2 . Photovoltaic solar cells can…

A: The input power given to a solar cell is given by the equation,…

Q: Under normal conditions the human heart converts about 12.7 J of chemical energy per second into…

A:

Q: You walked a one hundred step stair to a shrine in Shibuya, Tokyo. The height of each stair is…

A: total number of stair = 100 height of each step = 20 cm=20 x 10-2 m total vertical distance…

Q: The rectangular cistern (storage tank for rainwater) shown has its top 4 m below ground level. The…

A:

Q: b) A human can generate power of about 80 W. If one person works to raise water for 4 hours every…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: The work W done when lifting an object varies jointly with the mass m of the object and the square…

A: Answer:- The problem statement suggests that the work W varies jointly with the mass m and the…

Q: The metabolic power for walking is 316 W for Lili. For how long would Lili have to walk to use all…

A: Given Data, Metabolic Power required for walking (P)=316 W Energy Content in a can of soda (E)=628…

Q: In the formula W=F x d the work is measured in joules. What metric units does joules stand for?

A: Given: W = F x d

Q: Find the scalar product of the vectors in Figure? A B CDE 1.33 2.33 5.33 5.43 5.53 118° 32.8 N 132°…

A: F1→ = 32.8 @ angle 118 degree counterclockwise from positive y axis Angle made by F1 with negative x…

Q: Under normal conditions the human heart converts about 13.2 J of chemical energy per second into…

A:

Q: An open tank has the shape of a right circular cone (see figure). The tank is 8 feet across the top…

A: Diameter  of the cone is d=8 ft Height of the cone is h=6 ft Weight of the water per cubic foot is…

Q: A bathtub in the shape of a hemispherical bowl of diameter 6 feet is filled with water. How much…

A: Consider a small portion of water in the hemispherical tub with thickness dy at height y from the…

Q: A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ…

A: From work energy formula we know, Metabolic energy = change of K.E…

Q: An aquarium 12m long, 2m wide, and 7m deep is full of water. The density of water is 1000kg/m^3 and…

A:

Q: Answer in exact form and decimal.

A: Given:

Q: A water fountain uses 125 Watts of power each hour. It is run 24 hours each day for 7 days. If…

A: The formula for the amount of energy consumed by the fountain is:

Q: Under normal conditions the human heart converts about 12.7 J of chemical energy per second into…

A:

Q: A vertical right-circular cylindrical tank measures 28 ft high and 14 ft in diameter. It is full of…

A: height of the cylindrical tank is 28 ft diameter is 14 ft.               So, the radius is .…

Q: While solving a problem, a person ends up with the equation E = 16 kJ + 7 kJ/kg at some stage. Here…

A: Consider the given equation. Here, E represents the total energy in kilojoules. The equation of the…

Q: Kleiber's Law states that for the vast majority of animals, the metabolic rate M is a power function…

A: Metabolic rate = M Weight = W  M is the power function of Weight.

Q: The total consumption of electrical energy in the United States is about 1.0 1019 joules per year.…

A: The average rate of energy consumption is known as the power. The formula to calculate the power is…