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
Dovator [93]
4 years ago
5

The men's world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. At this rate, how many second

s would it take to swim 0.8500.850 miles (1 mi = 1609 m)?
Physics
1 answer:
swat324 years ago
7 0

Answer:

797.41 s

Explanation:

0.850 mile = 1609 x .85 m

= 1367.65 m

14 min 34.56 s

= 14 x 60 + 34.56 s

= 874.56 s

Speed of swimming = Distance / time

= 1500 / 874.56

= 1.7151 m /s

Time to swim a distance of 1367.65 m

= Distance / speed

= 1367.65 / 1.7151

= 797.41 s

You might be interested in
A heat engine with a thermal efficiency of 45 percent rejects 500 kj/kg of heat. how much heat does it receive
adell [148]
Alot as far as i know unless you need it in formal terms.
8 0
3 years ago
A high-jumper clears the bar and has a downward velocity of - 5.00 m/s just before landing on an air mattress and bouncing up at
Jobisdone [24]

-- As she lands on the air mattress, her momentum is (m v)

Momentum = (60 kg) (5 m/s down) = 300 kg-m/s down

-- As she leaves it after the bounce,

Momentum = (60 kg) (1 m/s up) = 60 kg-m/s up

-- The impulse (change in momentum) is

Change = (60 kg-m/s up) - (300 kg-m/s down)

Magnitude of the change = <em>360 km-m/s </em>

The direction of the change is <em>up /\ </em>.

8 0
3 years ago
Compare and contrast fluorescent and incandescent light bulbs.
dezoksy [38]

Incandescent light is a glowing white light produced by heat. An incandescent light bulb works by heating a filament in the bulb. Fluorescent light is a bright light produced by electricity flowing through a tube filled with ionized gas. Fluorescent light bulbs are more energy-efficient than incandescent bulbs

5 0
3 years ago
Even when shut down after a period of normal use, a large commercial nuclear reactor transfers thermal energy at the rate of 150
Phoenix [80]

Answer:

The temperature of the core raises by 2.8^{o}C every second.

Explanation:

Since the average specific heat of the reactor core is 0.3349 kJ/kgC

It means that we require 0.3349 kJ of heat to raise the temperature of 1 kg of core material by 1 degree Celsius

Thus reactor core whose mass is 1.60\times 10^{5}kg will require

0.3349\times 1.60\times 10^{5}kJ\\\\=0.53584\times 10^{5}kJ

energy to raise it's temperature by 1 degree Celsius in 1 second

Hence by the concept of proportionately we can infer 150 MW of power will increase the temperature by

\frac{150\times 10^{6}}{0.53584\times 10^{8}}=2.8^{o}C/s

5 0
3 years ago
What is the kinetic energy of a vehicle that has a mass of 3,500 kg and is moving at 40 m/s
stiv31 [10]

Answer:2800000j

Explanation:

For us to know the kinetic energy of the vehicle,

Where m is the mass

And v is the velocity

Then, K.E=1/2mv^2

While, K.E=1/2×3500×40^2

Therefore, our answer will now be

K.E=2800000j

5 0
3 years ago
Other questions:
  • What is the acceleration of a car that moves at a steady velocity of 100km/h for 100s?
    6·1 answer
  • What is terminal velocity?
    12·1 answer
  • What is the potential energy of a 3 kg rock sitting at the top of a 21 meter high cliff?
    8·1 answer
  • Which kind of pressure prevents stars of extremely large mass from forming?
    15·2 answers
  • An experiment yielded the above temperature and time information. what is the freezing point of the material in this experiment
    10·1 answer
  • How come when an object has a greater mass, it has a greater Inertia? and the other way around.
    9·1 answer
  • Complete the statement below with all that apply.
    6·2 answers
  • PLZ HELP ON #22-26!!!! <br><br>Please explain why and how you got your answer.
    13·1 answer
  • On the periodic table , the vertical columns that extend down the periodic table are called ?
    14·1 answer
  • 2) A molecule of hydrochloric acid HCl contains one atom of hydrogen and *
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!