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Physics
Page 11
Questions (147,304)
(a) Photoelectrons with a maximum kinetic energy of 7.6eV are emitted from a metal when it is illuminated by ultraviolet
3 answers
asked by
Anon
1,751 views
Which is the best description of how to build an electromagnet?(1 point)
Responses Wrap a wire around an iron or steel core at
4 answers
asked by
the real BARNY THE DINO :)
304 views
A 20g mass with charge q=+8C hangs from a spring of stiffness k=50N/m. If an infinite plane with charge density sigma=+3C/m^2 is
3 answers
asked by
Jerry
662 views
Which object has the greatest kinetic energy? (1 point)
• a yellow car with a mass of 500 kg moving at 12 m/s •a blue car
3 answers
asked anonymously
220 views
Given DIAGRAM 1.1 where FT means Tension and W means Weight, calculate the tension on the steel cable given the following
2 answers
asked anonymously
126 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
.
64 views
What two fundamental forces are combined in the standard model?
a. The electromagnetic and weak nuclear forces b. The strong and
1 answer
asked by
kricket
49 views
What happens when two substances with different temperatures come into contact?
Thermal energy is transferred from the warmer
1 answer
asked anonymously
39 views
A load of 30N is raised 2m when an effort of 10N moves through 8m .calculate velocity ratio
1 answer
asked by
Johnson ofori
147 views
Describe the speed of the remote-control car over time.
A. The speed of the car decreases from 4 mi/h to 2 mi/h in the first 3
62 answers
asked by
Summer
11,423 views
An aircraft flies at an altitude of 30,000 feet. Determine the air temperature (in [K]), air pressure (in [Pa]) and air density
6 answers
asked by
sam
4,239 views
A baseball player puts a baseball on a batting tee. The baseball bat is able to deliver 4.0x10^5 W of power and is in contact
5 answers
asked by
R
3,585 views
Suppose that an object is dropped from a height of h meters and hits the ground with a velocity of v meters per second. Then v=
6 answers
asked by
Bryan
13,361 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
2,402 views
If a transparent material has a refractive of 2.0;
a) calculate the critical angle b) if the refractive index were less than 2,0,
5 answers
asked by
Cathy
2,934 views
A 0.170 kg hockey puck is initially moving at 21.2 m/s [W] along the ice. The coefficient
of kinetic friction for the puck and
7 answers
asked by
LG
8,162 views
what is a newton (1 point)
A. a force that changes the motion of an object*** B. a non-contact force C. the unit in which force
7 answers
asked by
allie
1,264 views
Two metal disks, one with radius R1 = 2.40 cm and mass M1 = 0.900 kg and the other with radius R2 = 4.95 cm and mass M2 = 1.50
5 answers
asked by
121
11,611 views
given that Earth's surface gravitaitional field strength has a magnitude of 9.80N/kg, determine the distance(as a multiple of
5 answers
asked by
Grace
1,696 views
Recall that work is defined to be force times distance, and that the weight (force) of a liquid is equal to its volume times its
5 answers
asked by
Mishaka
2,244 views
A 500 g piece of iron changes 7°C when heat is added. How much heat energy produced this change in temperature? C of iron is
4 answers
asked by
Anonymous
4,179 views
Why is copper wire a better conductor of electricity than carbon fiber?(1 point)
Copper (Cu) has no loose electrons. Copper (Cu)
3 answers
asked by
DINO NUGGETS
274 views
Which choice describes how energy is transferred at the particle level through the process of conduction?
A. The fast-moving
5 answers
asked by
Science
5,020 views
A friend infers from the graph that the temperature of a 10.0-g sample of iron would rise 110 degrees Celsius. What should she
4 answers
asked by
Spartan
1,382 views
A heavy conductor (mass m, length `, resistance R) is suspended by two springs each with spring constant k, and connected to a
5 answers
asked by
cr
2,152 views
A group of students sets up an electric circuit with wires, a battery, and a light bulb. Why is their circuit called a direct
3 answers
asked by
Hlo
405 views
The drawing shows a student holding two negatively charged balloons.
What is most likely to occur if the student brings the
1 answer
asked by
6
156 views
A student is investigating magnetic fields. The student places four different objects near identical magnets and observes what
1 answer
asked by
A
260 views
What is the relationship between kinetic energy and thermal energy?(1 point)
Responses Kinetic energy is a measure of thermal
1 answer
asked by
Fecker
174 views
Fluid is flowing in a tube that has a radius of 3 centimeters. Water is flowing through a circular cross section at a rate of
5 answers
asked by
Alex
2,074 views
a string can hold up 12 kg without breaking. You tie the string to a 30kg object sitting on ice and use it to pull the object
5 answers
asked by
John
3,246 views
A student drops a basketball into a pool from a height of 5 meters while her friend records the approximate splash height. They
39 answers
asked by
i need to know
21,825 views
1) When a pendulum 0.5m long swings back and forth, its angular displacement Ɵ from rest position, in radians is given by
5 answers
asked by
Hyde
3,781 views
𝟙.) Which term describes how far an object has traveled from its original location?
🅰🅽🆂🆆🅴🆁: displacement
17 answers
asked by
ʟᴏɴᴅʏɴ
6,119 views
Which is a good description of kinetic energy?
conserved energy stored energy energy from the sun energy of motion A person
44 answers
asked by
H
12,805 views
A piece of wood float on water and sinks in a methylated spirits .if the density of the wood is 0.8g/cm,explain why it would
12 answers
asked by
Raymond
4,622 views
Two missiles, 2420 km apart, are launched at the same time and are headed towards each other. They pass after 1.5 hours. The
5 answers
asked by
Jay
2,488 views
Blake and Drew are playing horseshoes. Blake takes the first turn, and his horseshoe lands three-fourths of the way to the
8 answers
asked by
Potatoe
3,335 views
Thermal Energy Unit Test Items
Question In which case would the kinetic energy of particles be increasing? answerrrrrrrs
12 answers
asked by
GHJK
3,232 views
An oil tank is 3m long, 3 m wide and 2 m high, when it is full of coconut oil specific gravity of 0.90, find the downward force
5 answers
asked by
mmmm
2,218 views
Two identical charges repel each other with a force
of 16N. If the distance between the charges is doubled, the force will be?
6 answers
asked by
Queen Jenaay
6,126 views
David can row at 5 m/s in still water. He starts rowing from a point on the south bank of a river that is flowing due east at 3
4 answers
asked by
LE
1,115 views
I have several questions
4: The image above shows particles in a medium. Which of the following shows the best conditions for a
6 answers
asked by
Roover
5,076 views
A ball falls from a tall bridge. The ball has a mass of 0.15 kg. The air density is 1.225 kg/m3
. The ball’s surface area is
4 answers
asked anonymously
516 views
A piece of metal weighs 50.0 N in air, 36.0 N in water, an 41.0 N in an unknown liquid. Find the density of the unknown liquid.
7 answers
asked by
Phillip
11,845 views
Samuel builds four electromagnets and tests them by picking up paperclips. Here are his partial results.
Coils Paperclips 8 2 16
4 answers
asked by
the real BARNY THE DINO :)
259 views
Find the speed and period of a satellite that orbits Mars 175 km above it's surface. (The average radius of Mars is 3.40 x 10^6;
4 answers
asked by
Rebecca
1,365 views
A toy rocket has a mass 0f 350g at launch. The force it produces is 15N and it is fired at an angle of 65° to the horizontal.
10 answers
asked by
Joseph
5,779 views
I need help with this question with explanation. Thanks
A particle of mass m starts from rest at position x = 0 and time t = 0.
6 answers
asked by
Sara
7,543 views
An electron is excited from the n=1 ground state to the n=3 state in a hydrogen atom. Which of the following statements are
7 answers
asked by
Anonymous
19,752 views
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