which of these statements are true:
a) always undesirable
b) used in light bulbs
c) what makes fuses blow
d) all of the above-b) and c)are true.-b and c
a-helps you warm the coffee -> highly desirabl
A 21 Ohm resistor is connected across a 120 V source. The resistor is then lowered into an insulated beaker, containing 1.0 L of water at 23 degrees Celsius for 30 seconds. What is the final temperatu
I know that the the light gets reflected off them but the light that gets reflected is the light of the source. So, how are we able to see them if they dont emit light?-This is actually a good questio
Neutron stars can be considered a huge nucleon right?-No, an elementary particle is the smallest of particles that do not contain any smaller units by which it can be broken down further. A neutron st
the block final comes to rest.
a) If the block absorbs 80% if its initial kinetic energy as internal energy, calculate its increase in temperature.
b) What happens to the remaining energy?-a)
dT = H/
If a moving marble going 2 m/s collides with a still object then stops and the other marbles starts moving in the same direction how fast is the second marble moving?
their masses are both 0.02 kg...-
1. As the distance increases gravitational force also increases
2. As you go deeper into the Earth the gravitational field increases
3. The moon is falling to the Earth
4. The force of attraction of e
Once again, a question about quotas was recently posted, and several answers suggested the strong presense of officers on the road at the end of the month is proof quotas exist.
If this was true, wou
Alright, so my band director put me in charge of pyrotechnics for the 1812 overture. We need to have a cannon-esque explosion, in tempo, without a projectile. She doesnt want to buy a cannon, so i hav
I have heard and seen that they have built the Large Hadron Collider in Geneva Switzerland back in 2008. It had taken them decades to build it and it cost over a billion dollars in funding to create i
1.orbiting of a moon on a planet
2.a car making a sharp turn
3.an apple falling from a tree
4.a hockey puck sliding on ice-2.a car making a sharp turn
The friction (aka traction) is what CAUSES the
A long aluminum rod is struck at one end. At the other end an observer close to the rod, hears the sound of the blow twice (once through air and once through the rod), with a 0.840 s interval in betwe
Below are the given data
m for mass of the moon(treat as a point)
M for mass of the earth
r for the distance from the earth center to the moon
R for earths radius
How to prove that the difference in a
why do we measure time in seconds, minutes, hours, days, months years, etc?-Year- the time it takes for the earth to completely circle the sun
Month- the approximate time that it takes for one cycle
