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Physics
Page 9
Questions (149,769)
A 10kg mass is supported by two strings of length 5 m and 7 m attached to two points in the ceiling 10 m apart. Find the tension
7 answers
asked by
Simba
7,293 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
1,310 views
A girl pushes a load of mass 20kg to a distance of 10 metres in 5 seconds calculate (1) the work done (2) the energy used (3)
4 answers
asked by
Olorunnimbe
728 views
A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases,
15 answers
asked by
PLZ HELP
4,743 views
What three factors affect electric force? Choose all that apply
a whether the charge is positive or negative b amount of charge c
1 answer
asked by
re
195 views
A person moves away from a stationary sound source. Which phrase describes the sound perceived by the person?(1 point)
Responses
2 answers
asked by
no name
153 views
What would happen to a substance at the theoretical temperature of 0.K? (1 point)
O The substance's particles would stop moving
7 answers
asked by
I.D.C.I.I.C.I.S.S.I.N.T.D.W.H.T.B.D.
453 views
what is the difference between mass and weight?
The mass of an object is the amount of matter it contains, while its weight is a
15 answers
asked by
Nick J.
7,788 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
3,810 views
Radio signals travel at a rate of 3x10^8 meters per second.how many seconds would it take for a radio signal to travel from a
25 answers
asked by
Wheels On The Bus
15,477 views
Select the correct answer to complete the sentence. Gravitational force is said to be universal because:
- it applies to all
13 answers
asked by
Haile
9,603 views
In one or two sentences, make and justify a claim about the frequency of a wave if the wavelength increases and the velocity
12 answers
asked by
simpforlevi
4,314 views
A hydraulic plunger has a 12 cm diameter and a force of 350 kN acts on it. What is the pressure exerted on the plunger?
4 answers
asked by
jay
1,927 views
I have 130 liters of gas in a piston at a temperature of 250 degree Celsius. If i cool the gas until the volume decreases to 85
5 answers
asked by
mereula
3,018 views
How many electrons should be removed from the van de graaff generator so that its electric charge reaches 1.6 uC?
3 answers
asked by
Lyn
1,227 views
A certain lever system is only 30% efficient. What could make it more efficient?
Make a longer lever that will require less
4 answers
asked by
Subzero
1,384 views
How is gravitational lensing related to dark matter?
ty !
7 answers
asked by
saturnity
2,982 views
The Li2+ ion is hydrogenic and has a Lyman series at 740747 cm-1, 877924 cm-1, 925933 cm-1,and beyond. Show that the energy
5 answers
asked by
John
3,075 views
A boat heads 15 degrees west of north with a water speed of 3 m/s. Determine its velocity relative to the ground when there is a
6 answers
asked by
Luke
3,065 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
2,419 views
a battery has an e.m.f of 6 volts and an internal resistance of 0.4 ohm.it is connected to a 2.6 ohm resistor through a
9 answers
asked by
komal yaseen
12,477 views
A horizontal force of 804 N is needed to drag a crate across a horizontal floor with a constant speed. You drag the crate using
5 answers
asked by
Anonymous
3,622 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
19,783 views
A solid aluminum ingot weighs 89 N in air. What is its volume? The ingot is suspended from a rope and totally immersed in water.
4 answers
asked by
Anonymous
6,404 views
Suppose that, on a day when the outside temperature is 15 degrees Celsius, we fill a balloon with pure nitrogen gas, of which
10 answers
asked by
Nick
5,301 views
You hold one end of a rope and pull horizontally with a force of 65N. Calculate the tension in the rope if the other end is tied
5 answers
asked by
saffat
3,713 views
when a 14.0 kg mass hangs from a spring that has a spring constant of 550nm the spring has a length of 82 cm. determine the
5 answers
asked by
FORM 3G
2,201 views
A toy rocket has a mass of 350g at launch.the force it produces is 15N and it is fired at angle of 65⁰ to the horizontal.what
7 answers
asked by
Tesnim
1,104 views
A cylindrical oil storage tank 12 feet in diameter and 17feet long is lying on its side. Suppose the tank is half full of oil
6 answers
asked by
Mishaka
5,185 views
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 353 K. If 25.0 J of work is done
5 answers
asked by
Sean
7,784 views
A 300lb car is moving at constant velocity onn a level concrete road. How much force is needed to keep it moving if the u=0.04
4 answers
asked by
bits
1,556 views
Two charged spheres of charge q and mass m are each hanging from strings and are at equilibrium as shown below:
Give an
4 answers
asked by
Anonymous
1,790 views
A 0.02 kg ball moving to the right at 0.25 m/s makes an elastic head-on collision with a 0.04 kg ball moving to the left at 0.15
7 answers
asked by
Please help
8,106 views
The current peak wavelength of the CMB corresponds to a blackbody of temperature 2.74K. What was the peak wavelength of the CMB
5 answers
asked by
qwerty
2,625 views
The tine of a tuning fork, when struck, has an amplitude of 0.13 cm. If the frequency of the fork is 200 Hz, what total distance
5 answers
asked by
HanuPhys26/11
3,783 views
An FM radio station broadcasts its signal at a frequency of 9.15 ×107 hertz. Determine the wavelength of the signal in air.
5 answers
asked by
ashley --
2,811 views
An object located 18 cm from a convex mirror prodeucses a virtual image 9 cm from the mirror. What is the magnification of the
5 answers
asked by
Shirley
3,564 views
An object is placed at a distance of 60 cm from a converging lens with a focal length of 20cm. What is the magnification of the
5 answers
asked by
Lance
3,477 views
An object is placed 20.0 cm to the left of a convex lens with a focal length of +8.0 cm. Where is the image of the object?
A)28
4 answers
asked by
jasmine
3,885 views
A non-rotating cylindrical disk of moment of inertia I is dropped onto an identical disk rotating at angular speed w. Assuming
5 answers
asked by
Aja
4,560 views
a stone is thrown at an angle of 30 degrees above the horizontal from the top edge of a cliff with an initial speed of 12m/s. a
4 answers
asked by
S
3,374 views
How much thermal energy is released when 500 g of steam at 100 degrees celsius condenses into liquid and then cools to 50
4 answers
asked by
AlphaStrike
3,130 views
Estimate the total binding energy for copper.
550 MeV Estimate the energy, in joules, needed to break a 3.0g copper penny into
4 answers
asked by
Leila
1,877 views
If a reaction yields 2.5165 × 10^8 kJ, then how much mass was lost? (User 3.00 x 108 m/s as the speed of light)
2.30 × 10^-3 kg
4 answers
asked by
Joanne
1,748 views
A spring with 50 N/m hangs vertically next to a ruler. The end of the spring is next to the 21-cm mark on the ruler.If a 2.5-kg
4 answers
asked by
Anonymous
2,891 views
A car weighing 15,000N rounds a curve of 60m at an angle of 30 degrees. Find the friction force acting on the tires when the car
3 answers
asked by
Marck
646 views
calculate work done using machine to raise a load of 10kg through height of 2m and effenciency is 70%
3 answers
asked by
Dan
521 views
On Earth, the gravitational force of a certain military drone is 6.0 kg. What is the helicopter's gravitational force if it is
1 answer
asked anonymously
242 views
A spring balance attched to the ceiling of an elevator supports a 10N object. In each of the following casses, tell whether
3 answers
asked by
Klari
1,026 views
Use the table of electric force between objects in two different interactions to answer the question.
Interaction Charge on
1 answer
asked anonymously
65 views
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