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Physics
Page 7
Questions (149,062)
Two tugboats are towing a ship.Each exerts horizontal force of 5.0 tons and the angle between the two ropes is30°.What is the
5 answers
asked by
Fernando cruz
1,275 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
4,734 views
Gravity Unit Test
8th Grade Connections Academy Please only use this to check your answers. 1. On which object will Earth’s
4 answers
asked by
Pichu0008
633 views
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.06x²
5 answers
asked by
Sandra
3,878 views
A hydraulic lift office chair has its seat attached to a piston with an area of
11.2 cm2 . The chair is raised by exerting force
7 answers
asked by
Alexis
7,523 views
A machine has a velocity ratio of 6 and is 80% efficiency.What effort would be needed to lift a load of 300 with the help of
6 answers
asked by
Bright
4,914 views
Waves Unit Test
1 of 141 of 14 Items Question Use the diagram to complete the statement. An illustration shows the propagation of
39 answers
asked by
who dat
2,883 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
3,068 views
1.A catapult launches a boulder with an upward velocity of 120 ft/s. The height of the boulder, h, in feet after t seconds is
7 answers
asked by
GummyBears
8,034 views
a crate weighing 562 newtons is resting on an inclined plane 30 degress above the horizontal. Find the components of the weight
7 answers
asked by
amirah
6,179 views
a projectile with a muzzle velocity of 550 m/s is fired from the a gun on top of a cliff 460 m above the sea level at a certain
5 answers
asked by
jennierson
9,448 views
The moon's diameter is 3.48 106 m, and its mean distance from the earth is 3.85 108 m. The moon is being photographed by a
4 answers
asked by
Anonymous
4,603 views
a stone is dropped from a 75m building. when a stone has dropped 15m, a second stone was thrown downward with an initial
5 answers
asked by
Oscar Zambrano
3,720 views
A ball is thrown upward with a speed of 40 feet per second from the edge of a cliff 500 feet above the ground. What is the speed
4 answers
asked by
Alice
4,284 views
A mass is oscillating with amplitude A at the end of a spring.
How far (in terms of A) is this mass from the equilibrium position
5 answers
asked by
Joe
4,974 views
A ball is thrown towards a vertical wall from a point 2m above the ground and 3m from the wall. the initial velocity of the ball
8 answers
asked by
ridhi
3,141 views
A large swinging ball is used to drive a horizontal iron spike into a vertical wall. The centre of the ball falls through a
7 answers
asked by
physicslover
3,155 views
A density bottle has a mass of 70g when empty 90g when full of water and 94g when full of liquid x calculate a mass of water
6 answers
asked by
Miriam
2,248 views
activity to demonstrate the fact that for a metallic wire of uniform material density and thickness, the resistance increases
4 answers
asked by
yash
853 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
1,870 views
Two pullies are connected by a belt, Pulley A has a radius of 3 cm and pulley B has a radius of 6cm. As Pulley A rotates, a drop
4 answers
asked by
Anonymous
1,700 views
Frequency is measured in Hertz. Which option best describes hertz?
A: The number of waves that pass a certain point within a
3 answers
asked by
Duck
706 views
Two similar waves are traveling through the same medium. Wave A has a frequency that is 3 times that of wave B.
How do their
2 answers
asked by
Iwannaknow
208 views
A 34 g glass thermometer reads 21.6°C before it is placed in 135 mL of water. When the water and thermometer come to
5 answers
asked by
Akbar
4,804 views
Calculate q when 22.0 g of water is heated from 25.0°C to 100.0°C.
4 answers
asked by
Someone
9,168 views
A uniform meter rule is balance at 30cm mark when of 50grams is hanging from its zero cm mark.calculate the weight of the rule?
10 answers
asked by
wangai
4,428 views
A 0.230-kg wooden rod is 1.55 m long and pivots at one end. It is held horizontally and then released.
1) What is the angular
4 answers
asked by
anonymous
3,929 views
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
7,277 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
1,304 views
The coefficient of expansion of a certain steel is 0.000012 per C^(degree) . The coefficient of volume expansion, in
6 answers
asked by
jay
6,100 views
A diamond's index of refraction for red light, 656 nm is 2.410 while that for blue light, 434 nm, is 2.450. Suppose white light
5 answers
asked by
Anonymous
11,906 views
1. Which list presents the four fundamental forces in order of relative strength from weakest to strongest?
A. electromagnetism,
5 answers
asked by
Bradly
4,868 views
The following samples are all water. Other than the temperature, all the water samples are identical. Which of the four samples
1 answer
asked by
kali
154 views
A tennis ball is dropped down a stairwell.
Which statement BEST describes the energy of the tennis ball? A. The tennis ball’s
4 answers
asked anonymously
245 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.
447 views
The length of simple pendulum that makes 12 oscillation/minute is
5 answers
asked by
Rajkumar
2,228 views
An airplane leaves Atlanta at 2 PM and flies north at 250 miles per hour. A second airplane leaves Atlanta 30 minutes later and
5 answers
asked by
Zara
4,983 views
Two identical charges repel each other with a force
of 16N. If the distance between the charges is doubled, the force will be?
6 answers
asked by
Queen Jenaay
6,154 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
1,374 views
What is the index of refraction of a material if the angle of incidence in air is 50 degrees and the angle of refraction in the
5 answers
asked by
Mariam
2,277 views
maria's bicycle has a diameter of 64 cm. as she rides at the speed of 21.6 km/h, she picks up a stone in her tire. draw a graph
6 answers
asked by
Allison
2,783 views
The handle of a car jack is moved 75 cm
and the car is lifted 2.5 cm. What is the ideal mechanical advantage of this car jack?
5 answers
asked by
Brittany
1,864 views
An airplane's velocity with respect to the air is 580 miles per hour, and it is heading N 60 degrees W. The wind, at the
6 answers
asked by
Hannah
6,405 views
A solid has a mass of 200g in air and when partly immersed in a certain liquid it has a mass of 160g. Given that the relative
4 answers
asked by
Jeremiah Tetteh
1,950 views
X-ray technicians wear protective gear to keep them safe from the X-rays. Why are X-rays dangerous?(1 point)
Responses They have
4 answers
asked by
osihxbdy8cgbefgb8y
241 views
) A batter hits a baseball so that it leaves the bat at speed
Vo = 37.0m/s at an angle ao = 53.1°, at a location where g = 9.80
7 answers
asked by
hehe
26,909 views
A motorist traveling with a constant speed of 15m/s passes a school-crossing corner, where the speed limit is 10m/s. Just as the
7 answers
asked by
:)
13,444 views
The velocity function (in meters per second) is given for a particle moving along a line.
v(t) = 3t − 7, 0 ≤ t ≤ 3 (a) Find
4 answers
asked by
Anonymous
13,106 views
Four resistors of resistance 1ohm,2ohms,3ohms,5 ohms are connected in series and afterwards in parallel. Calculate the combined
16 answers
asked by
Princess
6,012 views
The velocity of a particle on the x-axis is given by the differential equation dx/
dt= t^2/ 2 and the particle is at x = 4 when t
6 answers
asked by
John
1,832 views
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