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Physics
Page 28
Questions (147,415)
A uniform metre rule AB us balanced on a knife edge which is 55cm from B. If a mass of 10g is hung at P, which is 10cm from A,
9 answers
asked by
Richard
5,161 views
A 25 gram piece of metal is sitting in a beaker of boiling water. The metal is taken out of the beaker and quickly placed in a
5 answers
asked by
ANNIE
2,399 views
query=a stone of mass 30grams is placed in a measuring cylinder containing some water. the reading of the water level increases
4 answers
asked by
Matthew
1,340 views
a framed picture of weight 15N is hung on a wall, using a piece of string. The ends of the string are tied to two points, 0.60 m
4 answers
asked by
anon
1,093 views
Block A (60 N) and block B (40 N) are connected by a massless cord and are AT REST. Given ìs = 0.8.
The friction on A is : 1. 40
4 answers
asked by
help !
1,598 views
use boyles law to solve for the missing value in the following
P1=0.75atm,V2=435ml,P2=0.48atm, V1=?
4 answers
asked by
amie
1,740 views
100g of radioactive element X are placed in a sealed box. The half-life of this isotope of X is 2 days. After 4 days have
4 answers
asked by
A.S
2,217 views
A 5 m, 10 kg seesaw is balanced by a little girl(25 kg) and her father(80 kg) at the extreme opposite ends. How far from the
4 answers
asked by
Pram
3,130 views
A fire truck attaches two fire hoses to a hydrant to fight a fire. Each hose has a
diameter of 20 cm. The underground water pipe
4 answers
asked by
K
550 views
The moment of inertia of a solid uniform sphere of mass M and radius R is given by the equation I=(2/5)MR2 . Such a sphere is
4 answers
asked by
Anonymous
4,161 views
a 2 kg block slides down a frictionless incline from point A to point B. A force(magnitude P=3N) acts on the block between A and
4 answers
asked by
Robert
3,893 views
A bullet fired vertically upwards from a gun held 2m above the ground reaches its maximum height in 4sec, calculate its initial
4 answers
asked by
Saul
1,840 views
A flywheel with an axle 1.0cm in diameter is mounted in frictionless bearings and set in motion by applying a steady tension of
5 answers
asked by
Edwin
2,257 views
State the principle of moments. You are supplied with a meter rule ,a 100g weight, a knife edge, thread an object mass between
4 answers
asked by
Anonymous
804 views
a key is dropped from a height of 30 m , If its distance from the ground at t seconds after the release is given by the position
4 answers
asked by
Anonymous
1,089 views
Water (density = 1.0 × 103 kg/m3) flows through a horizontal tapered pipe. At the wide end its speed is 4.0m/s and at the
4 answers
asked by
Sammy
2,952 views
Two people are on a playground bridge, above a fresh layer of snow. They each drop an object into the snow from a height of 2
4 answers
asked anonymously
187 views
What unit would you use if you need to measure the distance across the playground
4 answers
asked by
Anonymous
931 views
Which of the following does NOT describe a change in velocity?
A. Your mom drives 60 miled per hour on the freeway.*** B. A kite
4 answers
asked by
Cedric
836 views
if the velocity of a progressive wave with a periodic frequency of 10KHz is 330m/s. calculate it's wavelength.
4 answers
asked by
iornav Gideon
567 views
a cannon is 80 feet long. the muzzle velocity = 960 ft / sec. if fired strait up, what is the maximum height
4 answers
asked by
josh
749 views
The spring balance is calibrated in newtons. State how the mass of the rock sample
may be found from the reading of the spring
4 answers
asked by
rida
1,370 views
A METRE RULE IS BALANCED BY MASSES OF 24 G AND 16 G SUSPENDED FROM ITS ENDS. FIND THE POSITION OF ITS PIVOT.
4 answers
asked by
Anonymous
518 views
A cylindrical iron rod 8cm height and 6cm in diameter stands in a cylindrical tin 12cm in diameter water is poured into the tin
7 answers
asked by
Christopher
1,562 views
The magnetic force (Vector FM)on a particle in a magnetic field is found by Vector FM = Vector I × Vector B, Vector I is the
4 answers
asked by
Jackie
1,391 views
Two particles Q and P are shot up vertically.P was first shot with velocity of40m/s and after4s.Q was also shot up.If upon
5 answers
asked by
Boateng Emmanuel
2,263 views
A rocket is used to place a synchronous satellite in orbit about the earth. What is the speed of the satellite in orbit?
4 answers
asked by
NJ
3,143 views
Morana is trolling for salmon in Lak Ontario. She sets the fishing rod so its tip is 1 m above the water and the line enters the
4 answers
asked by
Kim
1,591 views
What mass of ice is needed to cool 60g of water from 43oC to 20oC
4 answers
asked by
sam
1,207 views
a bicycle tire that has a volume of 0.85L is inflated to 140 pounds per square inch. What will be the pressure in the tire if
4 answers
asked by
Bryan
1,147 views
Where do sound waves travel faster?
A.) through denser materials, because the molecules in a tightly packed medium collide more
4 answers
asked by
goodog
197 views
A beam of thermal neutrons emitted from the opening of a reactor is diffracted by the (111) planes of nickel crystal at an angle
4 answers
asked by
mwk please please help
403 views
A hydraulic jack has an input piston that is 1.2 cm2 in area and an output piston that is 144 cm2 in area. How much input or
4 answers
asked by
DariaV
2,336 views
A 4.5 cm tall object is placed 20 cm in front of a spherical mirror. It is desired to produce a virtual image that is upright
3 answers
asked by
Tom
3,788 views
1) If the kelvin temperature of a gas sample in a steel tank increases to three times its original value , what will happen to
4 answers
asked by
Jason
1,053 views
When you double the amount of coffee, you also double the _______________.
a thermal energy b neither is doubled c temperature
4 answers
asked by
AskQues
317 views
The diagram shows the result when a student placed a magnet under a piece of paper, then sprinkled iron shavings on the paper.
Th
3 answers
asked by
dreg
224 views
an effort of 250N is applied to a pulley system consisting of two fixed and two movable pulleys to lift a load to a height of
5 answers
asked by
Charles
633 views
A Styrofoam bucket of negligible mass contains 1.75 kg of water and 0.450 kg of ice. More ice, from a refrigerator at -15.0
3 answers
asked by
Marthin
1,195 views
1.) Water flows from a 2 cm diameter pipe, at a speed of 0.35m/sec. How long will it take to fill a 10 liter container?
2.) A
4 answers
asked by
Akitsuke
1,791 views
n order to measure the transfer of thermal energy from one temperature body to another, what device would be most useful?
a Meter
3 answers
asked by
6th g=rade
142 views
Two forces of 20 N and 5 N are acting at an angle of 120 degree between them. Find the resultant force in magnitude and
3 answers
asked by
Tushar
2,985 views
A wheel is spinning with constant angular velocity the ratio of speed of a point on the end of rim to the speed of point halfway
3 answers
asked by
sunny chauhan
838 views
The pendulum on a cuckoo clock is 5.00 cm long. (a) Determine the period of this pendulum. (b) What is its frequency?
3 answers
asked by
Jason
2,293 views
A student performs an experiment where he sends sound waves from the air through a solid, a liquid, and a gas. He records the
3 answers
asked by
Anonymous ;)
396 views
Calculate the change in temperature that would shrink a room-temperature balloon to one-half its size. Vo is 10 Vf is 5
5 answers
asked by
DariaV
1,163 views
a circular track is made on which an athlete has to cover three rounds to complete a 1000m run.during the run find the distance
4 answers
asked by
aashi
1,217 views
6) The relationship between force and acceleration is given by Newton’s 2nd Law: Fnet = ma. In this case this becomes:
4 answers
asked by
Al
1,035 views
1) A 0.50 kg object is at rest. A 3.00 N force to the right acts on the object during a time interval of 1.50 s
a) What is the
3 answers
asked by
Isis
2,548 views
the speed of the current in Puget Sound is 5 mph. A barge travels with the current 26 miles and returns in 10 and 2/3 hours.
4 answers
asked by
haley
2,366 views
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