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Physics
Page 7
Questions (149,197)
Frequency is measured in hertz . Which option best describes hertz
4 answers
asked anonymously
530 views
Which electromagnet will produce the strongest magnetic force.
1 answer
asked anonymously
56 views
In the Dark - Quick Check
1. Weakly interacting massive particles/black holes/massive compact halos 2. Scientists have hypotheses
5 answers
asked by
Hey Lover <3
2,458 views
A 0.5kg cart connected to light spring for which the force constant is 20 Nm on horizontal frictionless air track. Calculate the
5 answers
asked by
Anonymous
7,588 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
4,738 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
636 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
3,882 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
7,525 views
A coconut of mass 2kg is on a tree of 5m tall; determine the potential energy of this height Take g=10ms^-2.
7 answers
asked by
Elvis
2,389 views
Radio signals travel at a rate of 3x10^8 meters per second.how many seconds would it take for a radio signal to travel from a
25 answers
asked by
Wheels On The Bus
15,474 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
4,917 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
2,893 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
2,786 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
3,071 views
The headlamp of a car takes a current of 0.4A from a 12V supply. The energy produced in 5Minute is ?
18 answers
asked by
Oywumi yemi
5,481 views
What is kinetic energy
12 answers
asked by
Arnny
2,528 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
8,037 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
9,452 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
6,018 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
4,614 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
3,726 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
4,977 views
A radar gun was used to record the speed of a car (in feet per minute) during selected times in the first 2 minutes of a race.
5 answers
asked by
Deondre
4,122 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
3,146 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
3,157 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
2,250 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
855 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
711 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
210 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
4,807 views
Calculate q when 22.0 g of water is heated from 25.0°C to 100.0°C.
4 answers
asked by
Someone
9,169 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
4,431 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
3,933 views
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
1,278 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
1,307 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
6,104 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
11,910 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
4,871 views
what is the difference between mass and weight?
The mass of an object is the amount of matter it contains, while its weight is a
15 answers
asked by
Nick J.
7,779 views
The length of simple pendulum that makes 12 oscillation/minute is
5 answers
asked by
Rajkumar
2,230 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
4,986 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
6,157 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
1,376 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
2,279 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
1,867 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
245 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
:)
13,448 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
13,108 views
A 30 ohm resistor is connected in parallel with a variable resistance R. The parallel combination is then connected in series
4 answers
asked by
Oscar
13,516 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
1,834 views
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