Questions LLC
Login
or
Sign Up
Ask a New Question
Categories
physics
Page 3
Questions
A stone is attached to the end of an elastic string and whirled round in a circle path of radius 80cm if the stone makes 9
3 answers
asked by
martins
1,223 views
A toy car (200 g) moves by shooting a plastic ball (50 g) horizontally out the back. The average acceleration of the car is 1.2
3 answers
asked by
emily
1,853 views
Find the ratio of the coulomb electrical force to the gravitation force between two electrons .
3 answers
asked by
Anonymous
454 views
A 9800 kg rocket is travelling east along a horizontal fricitonless rail at a velocity of 11 m/s. The rocket is then accelerated
2 answers
asked by
emily
537 views
a uniform beam 6.0m long and weighing 4kg rest on support at P & Q placed left and right 1.0m from each end of the beam. weight
3 answers
asked by
sidik
820 views
A “swing” ride at a carnival consists of chairs that are swung in a circle by 13.5 m long cables attached to a vertical
3 answers
asked by
korlysse buhay
664 views
The angle of refraction of a ray of light traveling through a piece of flint glass is 24°. Find the angle of incidence.
3 answers
asked by
lilybell
683 views
Two 200 W (120 V) lightbulbs are wired in series, then the combination is connected to a 120 V supply. How much power is
3 answers
asked by
ananomyus
658 views
Two 200 W (120 V) lightbulbs are wired in series, then the combination is connected to a 120 V supply. How much power is
3 answers
asked by
ananomyus
966 views
How much power is dissipated by each resistor in the figure below, in which V = 24 V and R2 = 15 ?
2 answers
asked by
ananomyus
854 views
How much power is dissipated by each resistor in the figure below, in which V = 24 V and R2 = 15 ?
1 answer
asked by
ananomyus
439 views
In a simple model of the hydrogen atom, the electron revolves in a circular orbit around the proton with a speed of 3.4 ✕ 106
3 answers
asked by
mary
1,536 views
At a playground, a 19.7-kg child plays on a slide that drops through a height of 2.29 m. The child starts at rest at the top of
4 answers
asked by
uknown person
2,106 views
A sled slides without friction down a small, ice-covered hill. If the sled starts from rest at the top of the hill, its speed at
4 answers
asked by
uknown person
4,022 views
help me please? I'm lost...
A small space probe is put into circular orbit about a newly discovered moon of Saturn. The moon's
2 answers
asked by
Ricky
617 views
A utube manometer contains mercury of density 13,600 kg/m3. One end of the manometer is open to the atmosphere and the other end
1 answer
asked by
Anonymous
721 views
In a uniform magnetic field, can an Amperian loop ever have a non-zero value
1 answer
asked by
Anonymous
336 views
What is the ratio of inertial mass to gravitational mass.
2 answers
asked by
kanchan
494 views
Ratio of inertial mass to gravitational mass
6 answers
asked by
kanchan
423 views
What is specific heat
1 answer
asked by
kanchan
383 views
a car of mass 1200 kg starts from rest, accelerates uniformly to a speed 4ms-1 in 2 seconds and continues moving at this
3 answers
asked by
maximilian
1,513 views
Two cars start off a race with initial velocities u0 and v0, and travel in a straight line with uniform acceleration á and â.
2 answers
asked by
Twazana
474 views
A liquid absorbs 45 kJ of heat, and its temperature increases from 305 K to 315 K. Determine the heat capacity of this liquid.
2 answers
asked by
emily
498 views
A 24.0 g metal cube at 85.5 °C is placed into a calorimeter containing 125 mL of water at 20.0 °C. The final equilibrium
2 answers
asked by
emily
587 views
An ice cube at its freezing point is placed in nested Styrafoam cups which contain 240 g of water at 21.5 °C. If the final
2 answers
asked by
emily
556 views
a bullet of mass 5.0g was fired at a stationary ball of lead. the head on impact moved the 10 kg ball at a velocity of .50m/s.
2 answers
asked by
colton
531 views
A rocket engine on a spacecraft of total mass 10,000kg ejected 1.4kg of hot gases every second at an average discontinuous speed
4 answers
asked by
Anonymous
1,126 views
Apparently, this website cannot display photos, so I'm gonna type my question:
A railway truck of mass 8340kg traveling at
2 answers
asked by
mangojuice
500 views
In an experiment to find the speed of 2.4g bullet, it was fired into a 650g block of wood at rest on a friction free surface. If
4 answers
asked by
flirtyme
686 views
file:///Users/haifaalajmi/Desktop/Screen%20Shot%202018-01-15%20at%201.08.42%20AM.png
file:///Users/haifaalajmi/Desktop/Screen%20S
4 answers
asked by
Anonymous
568 views
hello!
I have a really important question but sadly it contains a diagram and this website would not let me post a link, so if
2 answers
asked by
Anonymous
475 views
In an experiment to measure the speed of a bullet, the bullet is red into a piece of plasticine suspended from a rigid support
3 answers
asked by
Anonymous
2,271 views
There is motion of a straight track between two stations.
Average speed: 12m/s Distance between stations: 3600m. Please help how
4 answers
asked by
physics8ater
461 views
A ball is tossed vertically upwards with a speed of 5.0 m s–1. After how many seconds will the ball return to its initial
4 answers
asked by
physiclover
968 views
the radius of earth is 6000km what will be the weight of a 120 kg body if it is taken to a height of 2000km above the surface of
3 answers
asked by
disha
1,479 views
a child sees an empty soda can resting on the icy surface of a frozen pond and throws a stone at it the stone hits the can which
3 answers
asked by
neloum
720 views
The x-component of an electric field vector E = (200 N/C, 45 deg) is ___N/C.
7 answers
asked by
ja
368 views
Suppose a liquid's starting temperature is 35 degree celsius. and its ending temperature is 20 degree celsius. Explain what
1 answer
asked by
Anonymous
726 views
the displacement of a particle S is given by
S=A + BT +CT^2.Deduce the units of the constants A,B and C
4 answers
asked by
Fokai
2,330 views
A block and a tackle system of 4 pulley is used to raise 150g vertically upward if the efficiency is 80% determine the minimum
2 answers
asked by
Esther
558 views
A sample of lead with a mass of 1.45kg is heated until it reaches its melting point at 330C. The lead is then heated further
2 answers
asked by
Anonymous
1,072 views
When determining the specific heat from a given metal in a calorimeter the mass of the water remains constant, but the mass of
4 answers
asked by
Anonymous
1,354 views
A 0.300 kg air-track glider moving at 2.20 m/s bumps into a 0.800 kg glider at rest.
a.) Find the total kinetic energy after
2 answers
asked by
zack
562 views
An archer pulls a bowstring back 0.390 m, and the spring constant of the bow is 675 N/m.
a.) Find the amount of work the archer
2 answers
asked by
archie
672 views
1) A balloon rubbed against denim gains a charge of -8.45µC. What is the electric force between the balloon and the denim when
1 answer
asked by
marcus
953 views
The temperature difference between the inlet and the outlet of an air-cooled engine is 30.0K. The engine generates 7.0kW of
4 answers
asked by
Anonymous
2,911 views
2.0kg of water at 0 degree celsius is to be changed into ice at this temperature. The same mass of water now at 100 degree
4 answers
asked by
Anonymous
1,468 views
what happens to the amount of power a light bulb uses if the resistance of the bulb is increased?
2 answers
asked by
kylie
479 views
A sailor pushes a 195.0 kg crate up a ramp that is 2.00 m high and 6.00 m long onto the deck of a ship. He exerts a 750.0 N
1 answer
asked by
stormy
650 views
a man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 2.50 m and the distance
2 answers
asked by
archie
996 views
An AC voltage of the form Δv = (65.0 V)sin(340t) is applied to a series RLC circuit. If R = 46.0Ω, C = 27.0 μF, and L = 0.300
2 answers
asked by
Michelle
624 views
n automobile has a vertical radio antenna 1.40 m long. The automobile travels at 30.0 km/h on a horizontal road where Earth's
2 answers
asked by
ricky
658 views
A bullet of mass 0.1kg is moving at a speed of 300m/s is beds in ablock of mass 4kg initially at rest on frictionless horizontal
3 answers
asked by
Naod Demise
516 views
a ball of mass 2kg is suspended by a string of length 2m.it then from "b" and kicks an identical ball at position "a".if
2 answers
asked by
Naod Demise
831 views
A 1500-kg wooden roller coaster car traveling at 15 m/s approaches the loading station where the under-track brake strips are
2 answers
asked by
Laura
524 views
A rifle with a mass of 0.9 fires a bullet with a mass of 6.0 g (0.006 kg). The bullet moves with a muzzle velocity of 750 m/s
3 answers
asked by
sally
2,128 views
I don't know why my answer is wrong for this question. My answer is .8H. If you can help me,please do so because I got stuck at
7 answers
asked by
Anonymous
959 views
describe how the values of resisitivity determine the uses of material in industry ???
1 answer
asked by
girl
249 views
Calculate the total energy of 2.0 kg object moving horizontally at 10 m/s 50meters above the surface.
2 answers
asked by
Anonymous
1,083 views
find the magnitude and dirction of the resultant force of two perpendicular forces F1=3N and F2=4N
1 answer
asked by
Nada
413 views
An ideal gas occupies a volume of 1.87 cm3 at 15.7°C and a pressure of 101,325 Pa.
a) Determine the number of molecules of gas
3 answers
asked by
abbey
602 views
Can anyone please help me with this? : An electron of mass 9.11 x 10^-31 kg is accelerated by a constant force along the
3 answers
asked by
Anonymous
450 views
Can anyone please help me with answering this? : A person of mass 75 kg stands on a scale inside an elevator. What can you infer
2 answers
asked by
pipe
904 views
How can I change each of Normal force, Gravity and Friction force?
1 answer
asked by
pipe
354 views
A cannonball is shot with initial speed 230m/s at a 50-degree angle above the horizontal. Assuming air resistance is negligible,
2 answers
asked by
Cali
597 views
An object on the ground is launched at 34 m/s at an angle of 64 degrees above the horizontal. If the object lands on top of a
1 answer
asked by
Cali
467 views
Within the jet stream, a plane flies at 220 m/s at 19 degrees south of west. The jet stream itself is moving at 130 m/s due
1 answer
asked by
Cali
638 views
A river has a 7.3 m/s current due East. With respect to the water, the boat's velocity is 16 m/s north of east. what is the
1 answer
asked by
Cali
438 views
A science student is riding on a flatcar of a train traveling along a strait, horizontal track at a consistent speed of 12 m/s.
2 answers
asked by
Cali
576 views
Wile E Coyote, having missed the Road Runner, leaves the edge of the cliff at 29 m/s horizontal velocity. If the canyon is 104 m
2 answers
asked by
Cali
640 views
A lagged copper rod has a uniform
cross-sectional area of 1.0cm3 and length 20.0cm. when steady state is attained, the
4 answers
asked by
Bill
1,192 views
mathematical,express the relationship between number of moles,number of molecules and avogadros constant
2 answers
asked by
Bill
472 views
Helium occupies a volume of 0.04m3 at a pressure of 2*10^5 PA and temperature of 27 degree Celsius.Calculate the rms speed of
1 answer
asked by
Bill
676 views
what will be the resistance of a metal wire of length 2m and area of cross section 1.55×10 power -6 m square is the resistivity
2 answers
asked by
Crispin
812 views
A spring 20cm long is stretched to 25cm by a load of 59N. What will be its length when stretched by 100N assuming that the
2 answers
asked by
Issa
574 views
A spring 20cm long is stretched to 25cm by a load of 59N. What will be its length when stretched by 100N assuming that the
2 answers
asked by
Issa
560 views
A spring is stretched 40mm by force 15N, what is the work done by the force??
2 answers
asked by
Issa
576 views
A spring of natural length 1.5m is extended 0.055cm by force of 0.8N, what will it length be when the applied force is 3.2N
3 answers
asked by
Issa
675 views
how much power does a 63kg athlete develops as he climbs a 5.2m rope in 3.5 second
2 answers
asked by
bj
489 views
the movement of a couple of 100N but 2.5m apart is
1 answer
asked by
Samuel
302 views
show that nsini =constant
where n is refractive index and i is angle of incidence
4 answers
asked by
Abdulrahman
793 views
Niagara Falls are 50m high. Calculate the potential energy of 5kg of water at the top,relative to the bottom. What is the
4 answers
asked by
Princewill
1,764 views
An archer fires an arrow, which produces a muffled "thwok" sound after it hits a target. The archer hears the "thwok" exactly
2 answers
asked by
dakota
666 views
y=5 sin (3x_4)
1 answer
asked by
Anonymous
445 views
a-28-g rifle bullet traveling 230m/s buries itself in a 3.6-kg pendulum hanging on a 2.8-m-long string, which makes the pendulum
3 answers
asked by
tina
2,088 views
An electric heater raises the temperature of 120g of water in a thin light vessel through 10K in 2mins, when placed in 70g of
1 answer
asked by
Anonymous
642 views
A boy walk 30m eastward and then 40m northward calculate the shortest from the starting point.
2 answers
asked by
comfort
812 views
How do I use Newtons second law of motion to find tension on a rope?
The rope is holding a gymnast that has a mass of 48.5 Kg, am
3 answers
asked by
kans
827 views
Roger tosses a ball straight upward at v. Ignore air drag?
2 answers
asked by
Denise
777 views
Calculate the kinetic energy of a 3-kg dog that runs at a speed of 4 m/s
3 answers
asked by
Tb
1,387 views
According to the work-energy theorem, in the absence of friction, if you do 100J of work on a cart while pushing it across a
4 answers
asked by
Tb
612 views
another ball is thrown vertically upwards and returns to the ground 5 seconds later. the height to which the ball rises is
1 answer
asked by
tom
412 views
A swimmer is capable of swimming at 1.4m/s in still water. Calculate the following.
i. How far downstream will he land if he
3 answers
asked by
khalifa
3,925 views
A football is kicked at ground level with a speed of 18.0 m/s at an angle of 38.0 degrees to the horizontal. How much does it
2 answers
asked by
billy
511 views
A golfer hits a ball from the origin with an initial speed of 30.0 m/s at an angle of 50 degrees above the horizontal. The ball
2 answers
asked by
Joseph
1,082 views
A projectile is launched from the ground level to the top of a cliff which is 195m away and 135m high. If the projectile lands
2 answers
asked by
Julie
930 views
a truck travels beneath an airplane that is moving 120 km/ hr at an angle if 49 degrees to the ground. how fast must the truck
2 answers
asked by
ili
616 views
A 4-kg mass is being pulled towards the right with a rope that has a tension of 56 newtons at an angle of 25 degrees to the
1 answer
asked by
goober
460 views
What is the work done by a crane to lift a 500kg beam over a height of 50.0m? Assume the crane lifts the beam at a constant
4 answers
asked by
help
2,192 views
A 3kg mass experiences two vertical forces: 76.5 newtons pulling upward and 29.4 newtons pulling downward. What acceleration
1 answer
asked by
goober
310 views
Pages
1
2
3
4
5
6
7