Mix 4 L of 30°C water is 6 L of 40°C water and you’ll have water at what temperature?
Answers
Answer:
dont know
Explanation:
need points
Related Questions
Which pulley setup would decrease the amount of effort force needed to lift an objectA) two fixed position pulleys attached to a fixed point above the object that's being lifted B) one fixed position pulley attached to a fixed point above the object that is being lifted C) no pulleys just a string attached to an object that is being lifted D) one moving pulley attached to the object that is being lifted
Robert Hook discovered cells when viewing a _____ under a microscope.boxbloodcorkplant
A 50 kg ball rolls down the street at 5 m/s.Calculate the momentum of the ball.
Hydrogen has three isotopes 1H, 2H, and 3H. What is the difference between these three isotopes?
Answers
Speed = Distance / Time
In this case, the distance covered is 100 meters, and the time taken is 60 seconds.
Speed = 100 meters / 60 seconds = 1.67 meters per second
So, the speed of the swimmer is approximately 1.67 meters per second.
Answers
Answer:
188.7 m
Explanation:
height of bridge above water (h) = 393 m
mass of bungee jumper (m) = 150 kg
length of cord (L) = 78 m
acceleration due to gravity (g) = 9.8 m/s
initial energy = mgh = 150 x 9.8 x 393 = 577,710 J
since the jumper barely touches the water, the maximum extension of the cord (x) = 393 - 78 = 315 m
from the conservation of energy mgh =
therefore
577,710 =
k = 11.64 N/m
from Hooke's law, force (f) = kx' ⇒ mg = kx'
where x' is the extension of the cord when it comes to rest
150 x 9.8 = 11.64 × x'
x' = 126.3 m
the final height at which the cord comes to a rest = height of the bridge - length of the cord - extension of the cord when it comes to rest
the final height at which the cord comes to a rest = 393 - 78 - 126.3 = 188.7 m
b. a stopwatch that stops immediately when the stop button is clicked
c. a balance that always reads .01 g
d. measuring your height in your bare feet
Answers
Answers
There's not enough information given to do that calculation.
-- The question doesn't specify whether the satellite is on the
shelf in the Vehicle Assembly Building before being installed
onto the booster, or inside the nose-cone as the rocket is slowly
being rolled to the launch-pad, or on its ascent to orbit after launch,
or in orbit. Its velocity in each of these situations is different.
-- The question reveals only the satellite's mass, but the answer
doesn't depend on that number. The satellite's velocity depends
on the speed of the truck or the rocket carrying it, or the size of
the orbit it's in. The question doesn't give any of these.
==> In particular, the size of a satellite's orbit, or its speed in that
orbit, DO NOT depend on its mass.
For example:
There are hundreds of TV satellites ... the ones that match the
Earth's rotation and appear motionless in the sky. They have
many different sizes, shapes, and masses, but they're all in the
same geostationary orbit, 22,000 miles above the equator, and
they all have the same average orbital velocity, zero displacement
per (23 hours 56 minutes 4 seconds).
Answers
Answer:
inertia
Explanation:
a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
aka
it goes on because nothing is resisting it, in this case however, the car is there to stop it, and the result is spilled coffee (rip)
B. A crayon melting on a hot sidewalk.
C. Beach sand getting warmed by the sun.
D. An egg getting cooked in a pot of boiling water.
Answers
A). The hot burner is in contact wit the pot,
warming it with conduction.
B). The hot sidewalk is in contact with the crayon,
melting it with conduction.
C). The sun is not in contact with anything, and there is
no fluid to convect between it and the sand. The only way
for the sun to transfer heat to the sand is with radiation.
D). The boiling water is in contact with the egg,
warming it with conduction.