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Physics
Page 3
Questions (151,571)
If a force of 100n stretches a spring by 0.1cm. Find
(A) the elastic constant (B) the work done in stretching the spring 0.3cm if
5 answers
asked by
Gabriel
1,717 views
In models of magnetic and electric fields, why are field vectors depicted by arrows?(1 point)
Responses because they represent
1 answer
asked by
u don't know me
335 views
Sally puts on wool socks and rubs her feet on a nylon carpet. How does static electricity build up in Sally?(1 point)
Responses
10 answers
asked by
Hi
1,390 views
Calculate the force required to move a small pistons that has an area of 2m2,if the force of a large piston is 20n with an as
6 answers
asked by
Anonymous
2,473 views
If a load of 100N is applied to a wire,the extension is 0.01m. Calculate the energy stored in the wire.
17 answers
asked by
Joshua
2,329 views
Three capacitors, each of capacitance 120 pF, are each charged to 500 V and then connected in series. Determine (a) the
5 answers
asked by
Jobs
3,507 views
An electromagnet is the most powerful type of magnet there is. It is a magnet with a current running through it that can be
5 answers
asked by
Emperor
1,795 views
Lukalu is rappelling off a cliff. The parametric equations that describe her horizontal and vertical position as a function of
6 answers
asked by
Apryl
2,667 views
A person drive an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a
7 answers
asked by
maria
14,841 views
Which type of surface would best reflect light
7 answers
asked by
Amy
2,326 views
1.A catapult launches a boulder with an upward velocity of 120 ft/s. The height of the boulder, h, in feet after t seconds is
7 answers
asked by
GummyBears
8,104 views
a crate weighing 562 newtons is resting on an inclined plane 30 degress above the horizontal. Find the components of the weight
7 answers
asked by
amirah
6,235 views
Suppose you drop a tennis ball from a height of 9 feet. After the ball hits the floor, it rebounds to 80% of its previous
7 answers
asked by
Keith
4,336 views
A spiral spring loaded with a piece of metal extends by 10.5cm in air. When the mental is fully submerged in water, the spring
6 answers
asked by
Joker
4,045 views
Explain the metal/laundry line which hang droop on a warm day in kinetic molecular model
5 answers
asked by
Ompabaletse
315 views
If the pendulum’s length is 2.00 m and ag =9.80 m/s , how many complete oscillations does the pendulum make in 5.00 min?
the
4 answers
asked by
Anonymous
5,489 views
How can a stationary metal sphere have kinetic energy, the energy of motion?
1 answer
asked anonymously
231 views
A typical volume of a modern hot air balloon is 2500 cubic metres, and a typical maximum temperature of the hot air is 120
5 answers
asked by
Luis
7,376 views
Which option is a measure of the average kinetic energy of the particles in a substance?
a. phase b. thermal energy c.
30 answers
asked by
hmmmmmm
21,155 views
The coefficient of expansion of a certain steel is 0.000012 per C^(degree) . The coefficient of volume expansion, in
6 answers
asked by
jay
6,148 views
Which property is unique to electromagnetic waves?(1 point)
They can be controlled by the pull of gravity. They can travel on the
10 answers
asked by
abfrmk3
3,621 views
Two skydivers of different masses jump from a plane. In three to five sentences, explain how their falls compare, including the
34 answers
asked by
Yiam
6,562 views
The heat capacity of a material shows the amount of heat that can be taken in before the material increases in temperature.
6 answers
asked by
SPAMTON G SPAMTON
1,255 views
The acceleration of a particle is defined by the relation a=-8m/s2. Knowing that x=20m when t=4 and that x=4m when v=16m/s.
7 answers
asked by
ben
5,322 views
a cube of wood with a density of 0.78g/cm^3 is 10cm on a side. When placed in the water what height will the block float above
5 answers
asked by
PHYSICS HELP
7,035 views
Which scenario shows radiation?(1 point)
Responses Eggs boil in a pot of water. Eggs boil in a pot of water. The air under a
4 answers
asked by
meli
600 views
What happens when a cold spoon is placed in hot soup?(1 point)
Responses The soup’s molecules have more potential energy, so
4 answers
asked by
meli
780 views
the distance that a body falls through when dropped from a certain height varies directly with the square of the time of fall. A
7 answers
asked by
nimal
3,230 views
The force of gravity on different planets is shown in the table below. Place the objects below in order, from smallest weight to
3 answers
asked by
X
204 views
In the Dark - Quick Check
1. Weakly interacting massive particles/black holes/massive compact halos 2. Scientists have hypotheses
5 answers
asked by
Hey Lover <3
2,522 views
Two relays each with 20 ohms resistance and 0.16 henry inductance are connected in series. What is the equivalent impedance?
10 answers
asked by
student
5,929 views
A diagram is drawn showing a swing set with a swing pulled backward prior to release. The diagram shows how the swing will move
7 answers
asked by
Help
3,952 views
1. A spring bearing a 10-pound weight has stretched 0.5 inches. If you were to increase the weight to 15 pounds, how many inches
5 answers
asked by
John Gomez
4,495 views
The hydrostatic equation holds not just for air, but for other fluids such as water (air, though it is a gas, is often referred
5 answers
asked by
muh_ghgh
2,876 views
When would a transformation of chemical energy to electrical energy occur?
5 answers
asked by
stackz
2,605 views
A parallel circuit with a 20-ohm resistor and a 10-ohm resistor.
7 answers
asked by
ere
3,450 views
a force of 0.8N stretches an elastic spring by 2cm. find the force constant.
f e = k=? f=ke 0.8=0.02 * k k=0.8/0.02 k=40N/m
10 answers
asked by
sharon
4,823 views
a projectile with a muzzle velocity of 550 m/s is fired from the a gun on top of a cliff 460 m above the sea level at a certain
5 answers
asked by
jennierson
9,504 views
A 10uf capacitor is charged from a 30v supply and then connected across an uncharged 50uf capacitor.Calculate
a. The final
5 answers
asked by
Gift
19,008 views
The figure shows the y-position (in blue) of a particle versus time.
(a) What is the average velocity of the particle during the
4 answers
asked by
joy
5,346 views
A particular circuit is made up of a battery, a switch, a buzzer, and wires connecting the components. All of the components are
5 answers
asked by
:)
2,009 views
A decorative pottery bowl with a diameter of 30 cm is used as a garden ornament . A rain shower fills it with water to a maximum
5 answers
asked by
Carrie
3,247 views
A uniform half metre rule is freely pivoted at the 15cm Mark and it balanced horizontally when a body of mass 40g is hung from
7 answers
asked by
Deborah
8,369 views
Some say that the hot air balloons with which the Montgolfier brothers performed their first flight had a volume of 1700 cubic
5 answers
asked by
Nick
4,862 views
forty 2.0 kg blocks 20.0 cm thick are used to make a retaining wall in a backyard. Each row of the wall will contain 10 blocks.
4 answers
asked by
AlphaPrimes
3,747 views
One end of a cylindrical glass rod of refractive index 1.5 is a hemispherical surface of radius of curvature 20mm. An object is
1 answer
asked anonymously
179 views
Piston A has a cross section of 1200 sq.cm. While that of piston B is 950 sq.cm. with the latter higher than piston A by 1.75m.
4 answers
asked by
Jet
10,489 views
Argue why the concept of mobility is meaningless for an electron moving in vacuum?
5 answers
asked by
Maburuk maker
1,334 views
Water enters the heater at 25⁰C and leaves at 80⁰C. What is the temperature change in ⁰Fahrenheit, ⁰Kelvin, and
5 answers
asked by
Coke15
2,865 views
what is a newton?
-a force that changes the motion of an object -a force that pulls objects toward the ground -the unit in which
7 answers
asked by
YourEx
3,642 views
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