1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Klio2033 [76]
3 years ago
13

A student has a mass (including clothes and shoes) of 65.0 kg. She drinks a 12 oz. can of soda, with a nutritional energy conten

t of 140 Cal. Assuming that the efficiency of her muscles is 20%, how high can she climb without losing weight?
Conversion: 1 Cal = 1,000 cal = 4,180 J
Physics
1 answer:
Vikentia [17]3 years ago
4 0

She can climb 0.92 m without losing weight.

<u>Explanation:</u>

Gravitational potential energy is the energy consisting of the product of mass, gravity and height.

1 cal = 4184 J

140 cal = 585760 J

Energy = 585760 J,  m = 65.0 kg = 65000 g,   Efficiency = 20 %

                                  GPE = mgh

where m represents the mass

           g represents the gravity,

           h represents the height.

                             585760 = 65000  9.8  h

                                        h = 0.92 m.

You might be interested in
A penny rolls along the table for a distance of 1.3 meters. Jackie pushes it 40 centimeters further in the same direction.
brilliants [131]
40 meters times 1 meter over 100 centimeters equals 0.4 meters. 1.3 meters + 40 centimeters =. 1.3 m + 0.4 m = 1.7 m. The answer is 1.7 meters
7 0
4 years ago
Three-fourths of the area of a rectangular lawn 30 feet wide by 40 feet long is to be enclosed by a rectangular fence. If the en
satela [25.4K]

Answer:

The fence is 5feet less.

Explanation:

We need to determine

The less amount of fence required, if the enclosure has full width and reduced length, compared to full length and reduced width.

Approach & WorkingArea of lawn = 30 × 403/4th of the area of lawn = ¾(30 × 40) = 30 * 30

 When full width will be fenced, and reduced length will be fenced.

Width = 30 feet30 * L = 30 * 30Hence, length = 30 feetLength of fence needed = 2(30 + 30) = 120 feet

When full length will be fenced, and reduced width will be fenced

Length = 40 feet40 * W = 30 * 30W = 22.5 feetLength of fence needed = 2(40 + 22.5) = 125 feet

Difference in length of fence needed = 125 – 120 = 5 feet.

4 0
4 years ago
Does every light source emit only one type of light?
blsea [12.9K]

Yes it is possible. Spectrum of emitted light depends upon the chemical composition of the source. and the way of its excitation. a clear example to us is that of sun.

3 0
2 years ago
Sam is walking through the park. He hears a police car siren moving on the street coming toward him. What happens to the siren s
xeze [42]
The sound gets louder as it gets closer and when it passes is gets softer
7 0
4 years ago
Read 2 more answers
Which statements best describe the second stage of cellular respiration? Check all that apply.
grandymaker [24]

Answer:

oxygen combines with small molecules. energy is released and it happens in the cytoplasm

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Energy is measured in units called
    10·1 answer
  • The power dissipated in each of two resistors is the same. The current across resistor A is triple that across resistor B. If th
    10·1 answer
  • A helium nucleus contains two protons and two neutrons. The mass of the helium nucleus is greater than the combined masses of tw
    13·1 answer
  • Dr. Glover's office has one vendor for their practice management software and another for their electronic health record, but th
    9·1 answer
  • The circuit you should use to find the open-circuit voltage is
    6·1 answer
  • 23°C = ______ K<br> 23<br> 296<br> -250<br> 123
    6·1 answer
  • Where would you encounter each portion of the spectrum in your daily life
    15·2 answers
  • What is displacement?
    6·1 answer
  • Hi how do i run faster
    13·1 answer
  • Jupiter has enough mass to make 318 earths. In contrast, uranus and neptune have only enough mass to make.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!