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Physics
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Questions (146,257)
If the resultant force acting on a 2kg object is equal to (3i+4j)N, what is the change in kinetic energy as the object moves
6 answers
asked by
ATT
7,785 views
You stand at the bottom of an 8.0-m-long ramp that is inclined at 37∘ above the horizontal. You grab packages off a conveyor
6 answers
asked by
Kallian
2,415 views
A flywheel is making 180 r.p.m. and after 20 seconds it is running at 140 r.p.m. How many revolutions
will it make, and what time
7 answers
asked by
joel
6,748 views
a 300kg piano is being lifted at a steady speed from ground level straight up to an apartment 10.0m above ground. The crane that
6 answers
asked by
Delli
6,854 views
A boy of mass 50kg runs up a set of stairs of total height of 3.0m.find the work done against gravity
19 answers
asked by
izzy
5,557 views
The voltage,V, in an electrical unit is related to the current,I, and the resistance,R, by the equation V=IR. The current is
5 answers
asked by
Luis
4,936 views
The range of human hearing extends from approximately 20 Hz to 20000 Hz. Find the wavelength of these extremes when the speed of
5 answers
asked by
Lena
9,439 views
A student holds one end of a string in a fixed position. A ball of mass .2 kg attached to the other end of the string moves in a
5 answers
asked by
me
9,712 views
at t=0, a particle moving in the xy plane with constant acceleration has a velocity of vi=(3.00i-2.00j) m/s and is at the
7 answers
asked by
arnold
3,939 views
Two currents from different sources flow in opposite directions through a resistor. I1 is
measured as 79 mA on a 100 mA analog
5 answers
asked by
mary
4,376 views
A 6volt battery of internal resistance 0.5ohm is connected to three resistors of value, 3ohm, 4ohm, and 5ohm. Calculate the
12 answers
asked by
istifanus
3,459 views
A 1200 kg car pushes a 2100 kg truck that has a dead battery to the right. When the driver steps on the accelerator, the drive
4 answers
asked by
Help Physics college
14,371 views
An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass
10 answers
asked by
stewart
25,064 views
10. A cannon elevated at an angle of 35º to the
horizontal fires a cannonball, which travels the path shown in the diagram
9 answers
asked by
Physics Student need help
10,388 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
1,061 views
a basketball is thrown upwards on an arc at a 60 degree angle with the horizontal.If the velocity of the ball is 5m/s How fast
4 answers
asked by
ezzy
2,678 views
A flock of geese is attempting to migrate due south, but the wind is blowing from the west at 5.4 m/s . If the birds can fly at
5 answers
asked by
Megan
3,491 views
A hydraulic lift has 1000 N applied to an input piston that has an area of 30 cm2.
What is the pressure exerted on the input
5 answers
asked by
Xavier
3,100 views
An object act upon by two forces 5N and 12N. calculate the resultant Of the two forces if the two forces act perpendicular to
7 answers
asked by
Tawheed Mahmud
3,627 views
How many watts of power do you expend when you exert a force of 0.50N that moves a book 2.1m in a time interval of 1.1s ?
Express
4 answers
asked by
Anonymous
4,425 views
When light of a certain wavelength is incident normally on a certain diffraction grating the line of order 1 is at a diffraction
4 answers
asked by
Susan
3,795 views
The four tires of an automobile are inflated to an absolute pressure of 2.0*10^5 Pa. Each tire has an area of 0.024m^2 in
6 answers
asked by
Sarah
15,449 views
an astronaut on the planet zircon tosses a rock horizonally with a speed of 6.95 m/s. the rock falls through a vertical distance
5 answers
asked by
taylor
8,413 views
A man whose mass is 70 kg walks up to the third floor of a building. This is a vertical height of 12 m above the street level.
(a
4 answers
asked by
pakilina
4,011 views
A man enters a tall tower, needing to know its height. He notes that a long pendulum extends from the ceiling almost to the
6 answers
asked by
Ame
8,741 views
a relative density bottle weight 20g when empty 80g when fill with water and 100g when with a liquid. find the relative density
7 answers
asked by
Anonymous
1,690 views
Amechanic pushes a 2.50*10^3 kg car from rest to a speed of v, doing 5.00*10^3 Jof work in the process, During this time, the
4 answers
asked by
Anynomous
4,601 views
An object weighs 15N in air and 13N when submerged in water. What is the density of the object.
5 answers
asked by
Striker
6,418 views
calculate the total amount of head absorbed (in kj) when 2.00 mol of ice at -30.0C is converted to steam at 140.0 C
4 answers
asked by
colonial
1,826 views
The kinetic energy of a rolling billiard ball is given by KE=1/2mv2. Suppose a 0.17-kg billiard ball is rolling down a pool
5 answers
asked by
meghan
4,868 views
A 75-W, 120-V bulb is connected in parallel with 25-W, 120-V bulb. What is the net resistance?
4 answers
asked by
Allen
3,676 views
An object has a gravitational potential energy of 24 joules when it rests on a shelf 3 m above the ground. What would be its
4 answers
asked by
roxy
4,957 views
A wheel of diameter 28.0 cm is constrained to rotate in the xy plane, about the z axis, which passes through its center. A force
130 answers
asked by
Joe
3,911 views
A small block with a mass of m = 0.120 kg is attached to a cord passing through a hole in a frictionless, horizontal surface.
5 answers
asked by
Sonya
3,816 views
Calculate the linear expansivity of a brass of length 120m that assume a new length of 120.05m when heated through a temperature
12 answers
asked by
Living stone model college
4,315 views
A ball is thrown 12 meters in the air (so that the initial up-and-down distance is 24 meters). The ball rebounds 95% of the
5 answers
asked by
Anonymous
4,444 views
a traffic light is supported by two cables that are 140 degres apart. Each cable exerts a tensile force of 150 N on the night.
4 answers
asked by
idk
2,467 views
A cannon on a level plain is aimed 50 degrees above th e horizontal and a shell is fired with a muzzle velocity of 1200 ft/s
4 answers
asked by
valerie
1,713 views
Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the
11 answers
asked by
jessie
3,392 views
A certain radioactive material is known to decay at a rate proportional to the
amount present. A block of this material
5 answers
asked by
Frida
1,571 views
An object falls freely from a height of 25m onto a roof of a building 5m high. Calculate the velocity with which the object
5 answers
asked by
Obaloluwa
2,034 views
it takes 100 N to pull and object up an inclined plane. the gravitional force on the object is 600 N
what is the load force in
4 answers
asked by
mdm
2,305 views
a 100 gram bullet is fired from a 10 kg gun with a speed of 1000m/sec. what is speed of recoil
6 answers
asked by
Devin Darkie
3,086 views
Your brother's mass is 35.6 kg and he has a 1.3-kg skateboard. What is the combined momentum of your brother and his skateboard
5 answers
asked by
Brenna
3,612 views
A one-liter container completely filled with mercury has a mass of 13.6 kg and weighs 133.3 N. What is the buoyant force on the
5 answers
asked by
Ariannah
2,652 views
If 150.0 grams of iron at 95.0 degrees Celcius, is placed in an insulated container containing 500.0 grams of water at 25.0
5 answers
asked by
Chloe
3,882 views
The cannon on a pirate ships shoots cannon balls with a speed of 350m/s (the muzzle velocity). The cannon can be adjusted to
5 answers
asked by
Kira
1,631 views
One study suggests that a brain concussion can occur if a person's head is subjected to an acceleration as small as 60g, where g
4 answers
asked by
MUHAMMAD JUNAID
4,839 views
how much work is done if a force of 12N moves an object a distance of 5m
5 answers
asked by
princess
2,862 views
A balloonist is preparing to make a trip in a helium-filled balloon. The trip begins in early morning at a temperature of 15
5 answers
asked by
Amber
1,710 views
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