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Physics
Page 60
Questions (147,603)
A uniform beam of length 1.0 m and mass 16 kg is attached to a wall by a cable that makes an angle of 30 degrees with the end of
5 answers
asked by
Sam
5,217 views
how much is the energy stored in hooke's law spring increased when its stretch is increased from 8 cm to 16 cm?
why is it 300%?
4 answers
asked by
mc
3,257 views
An incident X-ray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered
4 answers
asked by
Leah
1,411 views
A heat engine operating b/n 100°c and 700°c has an efficiency equal to 40% of the maximum theoretical efficiency. How much
7 answers
asked by
Chaltu
1,333 views
a 50ml volume of gas is measured at 20 degree celsius,if the pressure remains constant what will be the volume of the gas at 0
4 answers
asked by
Vianca
915 views
Simple Machines
A simple wheel and axle has a wheel diameter of 2.3m and an axle diameter of 92mm. If an effort of 26N is
5 answers
asked by
Danny
2,888 views
A collision occurs between two pucks on an air-hockey table. Puck A has a mass of 0.020 kg and is moving along the x axis with a
4 answers
asked by
Miranda
2,109 views
The position of a particle moving along an x axis is given by x = 15t2 - 2.0t3, where x is in meters and t is in seconds.
(a)
4 answers
asked by
help
4,465 views
The human eye is most sensitive to light having a frequency of about 5.3*10^14 Hz, which is in the yellow-green region of the
4 answers
asked by
rick
2,814 views
A tired squirrel of mass 1kg does push ups by applying a force to elevate it’s centre of mass by 5cm as shown in the following
3 answers
asked by
Ram
783 views
The position of a particle in rectilinear motion is given by s(t) = tln(1/t) for t>0, where t is in seconds.
A. Find the time
10 answers
asked by
Miller
1,347 views
What is the ratio of turns for the secondary to primary coils in a step-down transformer, if the input voltage from a substation
4 answers
asked by
Austin
1,598 views
During takeoff, a plane goes from 0 to 50 m/s in 8s. What is its acceleration? Halos fast is it going after 5 s? How far had it
5 answers
asked by
Ang
5,082 views
A potter's wheel is rotating around a vertical axis through its center at a frequency of 1.8rev/s . The wheel can be considered
5 answers
asked by
Joe
3,482 views
Brandon hit a baseball upward with an initial speed of 120 feet per second. How much later did Ollie catch the ball? Use the
4 answers
asked by
John
1,299 views
1. Water at a pressure of 3.00 x 10 5th Pa flows through a horizontal pipe at a speed of 1.00 m/s. The pipe narrows to
7 answers
asked by
Leo
8,823 views
How do I calculate the amount of heat needed to convert 96g of ice at -24 degrees celciua to water at 28 degrees celciua?
4 answers
asked by
Emma
1,945 views
A sprinter starts from rest in a 100-meter race, accelerates to his full running speed of 10.3 m/s in 1.15 seconds (assume
6 answers
asked by
Phil
2,296 views
A 32-u oxygen molecule (O2) moving in the +x direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at
5 answers
asked by
Jacob
3,194 views
This question has me very lost.
Two loudspeakers emit sound waves along the x-axis. The sound has maximum intensity when the
4 answers
asked by
Phil
2,535 views
Trucks often have signs on their backs that say, "If you can't see my mirrors, I can't see you." Explain the physics here.
4 answers
asked by
Celeste
3,662 views
Maria throws a ball straight up with an initial velocity of 10 m/s.
A. What is its velocity at the highest point? B. What is its
3 answers
asked by
Stella
621 views
Ice is given thermal energy and begins to melt while remaining at the same temperature. Which changes happen to the molecules of
5 answers
asked by
Warrior Cat Lover
1,299 views
A brick of salt has a volume of 50cm3 and a mass of 100 grams. Calculate the
density of the brick.
4 answers
asked by
Nigel
1,925 views
A man travels 7.0km due north , then 10.0km east. Find the resultant displacement.
If he travels 7.0km 30degrees East of
4 answers
asked by
Ojumoola
800 views
The spiral spring of a spring balance is 25.0cm long when 5N hangs on it as and 30.0cm long when the weight is 10N
What is the
5 answers
asked by
Lazarus Joseph
4,298 views
A solid weigh 45N and 15N respectively in air and water. Calculate the relative density
7 answers
asked by
Ademide
2,347 views
A bicycle tire has a stone stuck in it. The radius of the tire is 46cm. Every time the wheel turns, the stone hits the ground.
a.
7 answers
asked by
Bethany
2,956 views
The efficiency of a machine is 80%. Determine the work done by a person using this machine to raise a load of 200kg through a
12 answers
asked by
Anonymous
3,861 views
A car accelerates from 12m/s to 25m/s in 6.0s. What is its uniform acceleration? How far did it travel in this time?
4 answers
asked by
Tyler
5,202 views
Two 0.4 kg soccer balls collide elastically in a head-on collision. The first ball starts at rest, and the second ball has a
4 answers
asked by
Ana
4,862 views
What is the specific heat of a metal if 24.8 g absorbs 65.7 cal of energy and the temperature rises from 20.2 degrees celsius to
4 answers
asked by
jenn
1,796 views
You look up and see a helicopter pass directly overhead: 3.10-s later you hear the sound of the engines. If the air temperature
5 answers
asked by
Matt
1,793 views
an aluminium container of mass 100g contains 200 g of ice at -20'c heat is added to the system at the rate of 100 cal/sec. what
4 answers
asked by
anu
1,618 views
A scuba diver 40ft below the ocean surface inhales 50.0 ml of compressed air mixture in a scuba tank at a pressure of 3.00 atm.
5 answers
asked by
amy
2,877 views
Please show how you got the answers, not just the answers.
A 40.0 N force stretches a vertical spring 0.250 m. (A) What mass must
4 answers
asked by
Amanda
3,762 views
how many joules are required to heat a frozen can of juice (360 grams) from -5C (the temperature of an overcooled refrigerator
4 answers
asked by
Kelly
2,554 views
. A small statue in the shape of a falcon has a weight of 24.1 N. The owner of the statue claims it is made of solid gold.When
4 answers
asked by
Nathan
2,001 views
A pilot of mass 65 kg in a jet aircraft makes a complete vertical circle in mid-air. The vertical circle has a radius of 1.70 km
4 answers
asked by
Rachel
2,615 views
a bicyclist is coasting on level ground at 32.35m/s. The bicyclist coasts up an incline of 20.5m at a 30degree angle. How fast
5 answers
asked by
cynthia
2,514 views
A constant magnetic field passes through a single rectangular loop whose dimensions are 0.35 m x 0.55 m. The magnetic field has
4 answers
asked by
Mary
3,433 views
a brass of length 100m increase to 100.5m when heated from 50degree celcius to 100degree celcius.calculate its linear
4 answers
asked by
nater
744 views
The "***" is my answer
1. A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a
6 answers
asked by
HELP ASAP
1,847 views
A point charge has an excess of 5.0 × 1012 electrons. What would be the electric potential at a distance of 0.50 m from the
6 answers
asked by
Brayden
1,158 views
A 10 kg piece of metal displaces 2 L of water when submerged. What is its density in units of gc/m3?
4 answers
asked by
Snowy
871 views
How much energy would it take to warm 30.0g of water at 35 C to the boiling point and boil all the liquid away?
4 answers
asked by
Jan
906 views
A pulley system used to lift a load of 9600N using an effort of 2400N through a vertical distance of 20m.1)calculate the
4 answers
asked by
Anonymous
1,062 views
1. A worker pushes horizontally on a 2000 N refrigerator on a kitchen floor with a force of 25 N. Which statement is the most
4 answers
asked by
Amber
3,565 views
A spring of force constant 1500nm-1 is acted upon by a constant force of 75n.calculate the potential energy stored in the spring
7 answers
asked by
Meerat
2,481 views
A 90kg halfback moving at 4.0m/s on an apparent breakaway for a touchdown is tackled from behind. When he was tackled by a
4 answers
asked by
Anonymous
1,506 views
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