Physics, 25.02.2020 04:00 ambriyaarmstrong01

A physics student spends part of her day walking between classes or for recreation, during which time she expends energy at an average rate of 270 . The remainder of the day she is sitting in class, studying, or resting; during these activities, she expends energy at an average rate of 100 .

If she expends a total of 1.5×107 of energy in a 24-hour day, how much of the day did she spend walking?

Hello, I don't know how to solve this problem .. but I took the answer from a site
and the answer is 10.39 hours but the system said that it's wrong and try again
and when i submitted it , they give me a note which said :

Answers: 3

Show answers

Another question on Physics

Physics, 22.06.2019 21:10

For the below questions, consider a consumer that consumes two goods, x and z with the following utility function. u with bar on top space equals space x to the power of 1 third end exponent z to the power of 2 over 3 end exponent suppose initial values for income and the prices of goods x and z are y equals 90, p subscript x equals space 10, and p subscript z equals 15 respectively, then the price of good x falls to syntax error from line 1 column 89 to line 1 column 100. unexpected '\'.. what is the magnitude of the total effect

Answers: 3

Answer

Physics, 23.06.2019 01:30

Aball is thrown vertically upwards from the top of a tower with a speed of 100m/s.it strikes the pound near the base of the tower after 25sec . the height of the tower is

Answers: 3

Answer

Physics, 23.06.2019 07:30

Aspring has a relaxed length of 33 cm (0.33 m) and its spring stiffness is 6 n/m. you glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 15 cm. you make sure the block is at rest, then at time t=0 you quickly move your hand away. the block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the earth. calculate y vs. time for the block during a 0.09-second interval after you release the block, by applying the momentum principle in three steps each of 0.03-second duration.

Answers: 1

Answer

Physics, 23.06.2019 09:00

Auniform electric field exists in the region between two oppositely charged plane parallel plates separated by a distance of 1.60 cm . a proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval of 3.20×10-6 s. 1-find the magnitude of the electric field. use 1.60×10-19c for the magnitude of the charge on an electron and 1.67×10-27kg for the mass of a proton 2-find the speed of the proton when it strikes the negatively charged plate

Answers: 1

Answer

You know the right answer?

A physics student spends part of her day walking between classes or for recreation, during which tim...

Questions