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Physics
Page 3
Questions (149,222)
What's the scientific term for a wire that gets longer due to heat?
5 answers
asked by
Botshelo
726 views
The girl in the picture is at the highest point in swinging and starts to come down. Which statement best describes the changes
46 answers
asked by
carson
13,129 views
modeling fusion quick check
19 answers
asked by
help
4,430 views
It takes a boat going upstream 3 hours to cover the same distance, as it would cover in 2 hours going downstream. What is the
7 answers
asked by
Helen
6,229 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
2,299 views
Three dynamics carts have force sensors placed on top of them.(cart 1, with mass of 2.2 kg, has one sensor --> cart 2, with mass
6 answers
asked by
anon
7,635 views
How can a stationary metal sphere have kinetic energy, the energy of motion?
1 answer
asked anonymously
199 views
Which of the following is an example of kinetic energy transfer?
18 answers
asked by
please help
8,386 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
1,183 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
3,993 views
Which describes a difference between solar wind and geomagnetic storm? Select the three correct answers
2 answers
asked anonymously
175 views
A giant model of a magnet is being built for a museum exhibit. What is the total surface area of the prop that will need to be
1 answer
asked anonymously
184 views
Hi guys how do I calculate residual driving force, driving force is 3000 air resistance is 370 N and rolling resistance is 160
7 answers
asked by
Anonymous
2,349 views
Why do scientists observe blueshift in certain stars?(1 point)
Stars with higher temperatures emit more light waves at the blue
5 answers
asked by
amos goresatann
2,493 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
8,326 views
Two postal delivery workers have different routes. They both travel from the post office, to neighborhoods to deliver mail, and
6 answers
asked by
TWO
2,847 views
A Particle moves along the x-axis so that at any time t>0, its acceleration is given by a(t)= ln(1+2^t). If the velocity of the
5 answers
asked by
D-MO
10,039 views
A glider on an air track is connected by springs to either end of the track. Both springs have the same spring constant,k , and
7 answers
asked by
annie
5,825 views
N1V1 = N2V2 is always positive but M1V1 may or may not be equal to M2V2,Why?
5 answers
asked by
Oliver
1,272 views
A rectangular of mass 10kg rest on an inclined plane with a coefficient of static friction of 0.55 and coefficient of kinetic
7 answers
asked by
elizabeth luhoya
2,787 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
10,446 views
An oceanographer measured a set of sea waves during a storm and modelled the vertical displacement of waves in meters using the
5 answers
asked by
Farah
3,605 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
737 views
A 30 kg table is pulled by a constant force across a rough horizontal floor with an estimated coefficient of kinetic friction
1 answer
asked by
Deadrea
174 views
A golf ball was hit and projected in an angle of 60 degrees with the horizontal. if the initial velocity of the ball was 50m/s,
6 answers
asked by
YellowCorn
14,448 views
A receiving antenna becomes misaligned by 30° to its original position. The power of the received signal in this new position
10 answers
asked by
Ramesh
5,490 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
4,783 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
5,878 views
Which statement correctly describes the relationship between thermal energy and particle movement?
As thermal energy increases,
79 answers
asked by
Anonymous
18,137 views
A catapult launches a boulder with an upward velocity of 92 m/s. The height of the boulder, h, in meters after t seconds is
9 answers
asked by
Anonymous
7,392 views
which term best describes the force exerted on the structural parts of a building?
a. density b. load c. weight d. gravity
7 answers
asked by
no name
716 views
A body is displaced through a certain distance x by a force of 30 newtons.if the work done is 100 joules and the displacement is
21 answers
asked by
CHIDIEBERE
8,074 views
5. A student has the following data: V1 = 822 mL, T1 = 75°C and T2 = -25°C. He calculates V2 and gets -274 mL is this value
4 answers
asked by
Evie
4,234 views
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.04x2+
5 answers
asked by
Fiddle sticks!
1,932 views
X, Y and Z are three points on a straight road.A car passes X with a speed of 5m/s and travels from X to Y with a constant
5 answers
asked by
Ajila Ayobami
3,976 views
Stored Energy Changes I Quick Check
1. A horseshoe magnet is moved toward a pile of iron shavings. The iron shavings divide and
24 answers
asked by
Connexus Student
19,263 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
1,714 views
In which case would the kinetic energy of particles be increasing? (1 point)
Metal is melted at 1,300°C. Metal is at room
58 answers
asked by
Daniel
23,439 views
yall know the anwsers to the LESSON 13
Non-Contact Forces Unit Test?? heres the first question Which statement explains how the
67 answers
asked by
HELP WWITH A TEST
4,648 views
A 52 kg woman is standing in a 26 kg cart that is moving a velocity of 1.2 m/s S. The woman staying rest then moves at a
4 answers
asked by
Anna
2,267 views
A stone is thrown up with a velocity of 20 m/s. While coming down, it strikes a glass pan, held at half the height through which
5 answers
asked by
Adnan
1,687 views
PLEASE CHECK MY ANSWERS-------------------------------------------------
An object falls through the air, gaining speed as it
49 answers
asked by
Anonymous
26,178 views
A brother and sister are standing next to each other at rest on a surface of frictionless ice. The brother’s mass is exactly
4 answers
asked by
katie
6,419 views
How does the average kinetic energy of the molecules of water compares to the molecules of petrol
3 answers
asked by
Montshisi
151 views
Which scenario shows conduction? (1 point)
O Air above a pot of simmering soup rises, forcing cooler air downward O Hot soup
4 answers
asked by
I.D.C.I.I.C.I.S.S.I.N.T.D.W.H.T.B.D.
567 views
Ball A was carried to the top of a hill in a straight line, while ball B was carried in a longer, zigzag path. At the top of the
6 answers
asked by
carson
4,265 views
What happens when thermal energy is applied to an ice cube
It's water molecules lose kinetic energy so the ice cube melts It's
3 answers
asked by
Hi
349 views
How much air is needed to fill a basketball with a diameter of 9 inches? Use 3.14 as an approximation for pl. Round your answer
1 answer
asked anonymously
273 views
Explain how spectrometer works by drawing a labelled flow diagram showing the main components of spectrometer and briefly state
1 answer
asked anonymously
52 views
A hydraulic lift system has an input piston with an area of 0,5 m2 and an output piston whith an area of 2 m2.
What force is
5 answers
asked by
oreneile michelle malwetse
1,768 views
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