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Physics
Page 29
Questions (147,042)
How does a flashlight illustrate the law of conservation of energy
1 answer
asked anonymously
48 views
What does temperature measure?(1 point)
Responses average kinetic energy of the particles in an object or substance average
1 answer
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58 views
A voltmeter and frequency meter are connected across the terminals of a single alternator running on no load gave the reading of
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convert 0.002cm to m
37 views
Why doesn’t an object falling from an airplane continue to accelerate?(1 point) Responses
Air resistance on the object will
1 answer
asked by
.
44 views
How can a stationary metal sphere have kinetic energy, the energy of motion?(1 point)
Responses The metal’s molecules are
7 answers
asked anonymously
58 views
Use the table to answer the question.
Time on Bunsen Burner (in seconds) Temperature (in ° F) 0 52 30 54 60 58 90 63 120 70
1 answer
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117 views
n particle accelerators such as the one shown, fields are employed to separate different subatomic particles. What type or types
1 answer
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42 views
Which statement about energy is correct?(1 point)
Responses Energy can be changed from one form to another. Energy can be changed
1 answer
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31 views
During the Apollo 15 mission, an astronaut dropped a hammer and feather from the same height. The objects reached the moon’s
1 answer
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35 views
Electric Circuits Quick Check
2 of 52 of 5 Items Question The batteries of some flashlights can be charged by turning a handle.
1 answer
asked by
LLL
86 views
An acorn rolls off a roof and falls to the ground. Which statement best describes the change in energy?(1 point) Responses
The
1 answer
asked by
.
32 views
Which type of wave can carry energy through a vacuum? (1 point)
Responses sound sound electromagnetic electromagnetic mechanical
1 answer
asked by
Creeper Mc.Fancyson
23 views
Work happens when a push or a pull is exerted on an object and the object moves a distance.
* 1 point True False
1 answer
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84 views
Determine if each statement is true or false.
Removing thermal energy decreases kinetic energy. The amount of thermal energy in a
1 answer
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LostCoward
21 views
As water becomes warmer, boils and then becomes water vapor (steam), what happens to its kinetic and potential energies?(1
1 answer
asked anonymously
24 views
which of the following would be best at transferring thermal energy a styrofoam cup rubber floor mat and iron radiator or
1 answer
asked anonymously
18 views
How does adding a resistor to an electric circuit affect the current?(1 point)
Responses The resistor increases the current by
1 answer
asked anonymously
34 views
Two similar waves are traveling through the same medium. Wave A has a frequency that is 3 times that of wave B.
How do their
1 answer
asked by
aaagtuygy
23 views
In one to two sentences, describe the relationship between harmonics and resonance frequency in a piano.(2 points)
1 answer
asked by
aaagtuygy
42 views
A scientist wants to explain the behavior of electromagnetic radiation which allows it to move through space. Which explanation
9 answers
asked anonymously
20 views
A ball is dropped from the roof of a building 44m high. How many seconds later will it hit the ground?
1 answer
asked by
Sky
242 views
A spring of length of 25cm is stretched to 35cm by a load of 50N. What will be the length when stretched by 100N assuming the
1 answer
asked by
Emmanuel
171 views
A labourer raises a load of mass 120N by using a system of pulleys he exert a force of 400N on the road. Calculate: 1. The
1 answer
asked by
Fathia
91 views
An object absorbs red, orange, yellow, blue, indigo, and violet light. What color is it?(1 point)
Pick one of the following: a)
4 answers
asked by
Iwannaknow
130 views
Calulate the amount of substance io 120g of trioxocarbonate (iv)ion,co2
1 answer
asked by
Evans
327 views
a uniform metre rule balances on a knife edge at the 60cm mark a weight of 20N is suspended at one end calculate the weight of
1 answer
asked by
Chloe
78 views
Use g=10 N/kg in this assignment.
1. What is the gravitational energy (relative to the unstretched surface of the trampoline) of
1 answer
asked by
aimee
309 views
An automobile of mass 2000kg started from rest position and increased it's speed uniformly to 9m/s in 30s.it maintained this
1 answer
asked by
Aaron
216 views
Three wire-wound resistors have the following values: 30 ohms, 80 ohms, and 100 ohms. Each resistor has a voltage rating of
5 answers
asked by
Anonymous
6,399 views
1. A boy pushes a car to slow it down while the car is rolling horizontally down the road. If the boy pushes backwards on the
4 answers
asked by
Jessica
4,434 views
An inductor in the form of a solenoid contains 440 turns and is 15.8 cm in length. A uniform rate of decrease of current through
4 answers
asked by
Robert
1,724 views
This is part of a lab with a mass attached to a spring, and the mass attached is of unknown weight.
Which of the following can
4 answers
asked by
Tyger2020
1,316 views
The maker of an automobile advertises that it takes 13 seconds to accelerate from 25 kilometers per hour to 90 kilometers per
6 answers
asked by
Kelly
5,502 views
A 6 ohms load is connected to a 119.6volts source through a pair of 0.25 ohms conductors. calculate a) the load current and
6 answers
asked by
Tristan
5,176 views
A gas has a volume of 4.25 m3 at a temperature of 95.0°C and a pressure of 1.05 atm. What temperature will the gas have at a
4 answers
asked by
Science
2,388 views
A short 10-g string is used to pull a 50-g toy across a frictionless horizontal surface. If a
3.0 x 10^(–2)-N force is applied
5 answers
asked by
tony
6,898 views
which unit is equivalent to meters per second?
a. hz*s b. hz*m c. s/hz d. m/hz
6 answers
asked by
jaden
9,645 views
A mechanic wants to use a compound pulley to lift a go-kart from the ground to work table, a distance of 1.2 meters. Without the
4 answers
asked by
the real BARNY THE DINO :)
622 views
calculate the weight ofa stone of mass 10kg and density 10000kg/m3 when it is totally immersed in water
4 answers
asked by
Benedict
380 views
A 22.0 kg child plays on a swing having support ropes that are 2.00 m long. A friend pulls her back until the ropes are 45.0 ∘
4 answers
asked by
Justin
8,210 views
Forces 10N and 50N are to be balance at the end of 1m long lever.Where should be the position of fulcrum?
5 answers
asked by
Manash
865 views
if the 5-ohm heater in problem 15 is placed with a 15-ohm heater, what current will the 15-ohm heater draw from the same power
5 answers
asked by
roland
1,826 views
two charges repel each other with a force of 0.1N when they are 5cm apart. Find the forces between the same charges when they
5 answers
asked by
ann
4,390 views
For a perfectly plastic central impact ______
Multiple choice question a)The entire kinematic energy of two bodies must be lost
4 answers
asked by
Rajan
2,287 views
a body of mass 3.0kg moves with the velocity of 10m calculate the momentum of the body
4 answers
asked by
gambo mamman
616 views
The weight needed to balance a lever varies inversely with the distance from the fulcrum to the weight. A 120-lb weight is
7 answers
asked by
Help
4,786 views
A 3m slinky rests on a table with a student holding each end. The students laterally shake the ends of the slinky to generate
5 answers
asked by
anonymous
1,798 views
You drive down the road at 39 m/s (88 mi/h) in a car whose tires have a radius of 34 cm.
What is the period of rotation of the
6 answers
asked by
anonymous
6,029 views
The velocity of a particle moving along the x-axis is v(t) = t2 – 2t, with t measured in minutes and v(t) measured in feet per
5 answers
asked by
Anonymous
4,238 views
A block starts at rest and slides down a frictionless track except for a small rough area on a horizontal section of the
5 answers
asked by
Becky
9,497 views
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