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Physics
Page 7
Questions (149,769)
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
4,920 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
2,912 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
6,164 views
Ball A was carried to the top of a hill in a straight line, while ball B was carried in a longer, zigzag path. At the top of the
6 answers
asked by
carson
4,276 views
The acceleration of gravity on the moon is 1.62 m/s2. If a ball is dropped on
the moon from a height of 1.50 m. Determine the
7 answers
asked by
Nic Balasuela
5,316 views
Question: Suppose you have sunlight shining on two clear containers of water on a table. Light waves refract through one of the
7 answers
asked by
Anonymous
2,993 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
2,288 views
2 cells, each of Emf 2v and internal resistance 0.5ohms are connected in series .they are made to supply current to a
7 answers
asked by
Odeyemi
2,677 views
How is an echo formed?
A.) Sound waves travel into a soft surface. B.) Light waves go around a smooth surface. C.) Sound waves
5 answers
asked by
goodog
347 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
1,957 views
What is kinetic energy
12 answers
asked by
Arnny
2,533 views
An ideal massless spring is fixed to the wall at one end. A block of mass M attached to the other end of the spring oscillates
4 answers
asked by
Tammy
14,030 views
A stone is suspended from the free end of a wire that is wrapped around the outer rim of a pulley, as shown in the figure (see
4 answers
asked by
Anonymous
12,469 views
a force F is applied in horizontal to a 10kg block. the block moves at a constant speed 2m/s across a horizontal surface. the
6 answers
asked by
kristen
4,644 views
A spring is stretched 40mm by force 15N, what is the work done by the force
9 answers
asked by
Issa
5,379 views
A small block with a mass of m = 0.120 kg is attached to a cord passing through a hole in a frictionless, horizontal surface.
5 answers
asked by
Sonya
3,861 views
A Frisbee is thrown horizontally with a speed of 12 m/s. If the Frisbee moves a horizontal distance of 15 m, how long will it
5 answers
asked by
Jhoy
4,192 views
A ball is thrown vertically into the air so that its height s after t seconds is given by the equation, s=-1/27(t^2)+4√t. Find
4 answers
asked by
Glen
2,287 views
Two reasons why displacement method is not suitable when determining the volume of a charcoal?
5 answers
asked by
Michael
2,836 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
856 views
A particle is moving at 0.75c relative to a lab on Earth. By what percentage is the Newtonian expression for its momentum
in
4 answers
asked by
David
2,069 views
Frequency is measured in hertz . Which option best describes hertz
4 answers
asked anonymously
531 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
716 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
4,811 views
Calculate q when 22.0 g of water is heated from 25.0°C to 100.0°C.
4 answers
asked by
Someone
9,173 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
4,436 views
if there are eleven resistors of 33k ohms each in parallel, what is the total resistance?
5 answers
asked by
dumon
3,384 views
at the bottom of a loop the speed of an airplane is 400 mph. this causes a normal acceleration of 9 g ft/sec^2, determine the
5 answers
asked by
aaa
4,400 views
PLEASE CHECK MY ANSWERS-------------------------------------------------
An object falls through the air, gaining speed as it
49 answers
asked by
Anonymous
26,220 views
A clam is dropped by a seagull it takes 3 seconds to hit the ground. what is the seagulls height approximate height above the
5 answers
asked by
Anonymous
9,963 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
11,915 views
Use the information in the table about four different electric circuits to answer the question.
Circuit Resistance (ohms) Voltage
7 answers
asked by
Lilly
550 views
One object is traveling northeast with a momentum of 12 kg-m/s, while a second object is traveling southwest on the same path as
7 answers
asked by
Student
2,899 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
643 views
Why might a plastic rod that contains a large number of electrons not have a static charge?
6 answers
asked by
rebecca
4,151 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
1,875 views
Energy Release Quick Check?
7 answers
asked by
PJ
4,350 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
:)
13,454 views
A 4.0 kg object is lifted 1.5 m. (a) how much work is done against the earth's gravity ? (b) repeat if the object is lowered
7 answers
asked by
jack
7,703 views
a boy tosses a coin upward with a velocity of 14.7 m/s.
a. find the maximum height reached by the coin. b. time of flight c.
7 answers
asked by
jenalyn calimag
19,299 views
the lowest frequency we can hear is about 20hz. calculate the wavelength associated with this frequency for sound that travels
5 answers
asked by
charlie
2,050 views
a 100g sample of wate at 90oC is added to a 500g sample of water at 10oC. what is the final temperature of the water
4 answers
asked by
julius
3,046 views
For the next part, you will need to know that the position d of an object attached to a spring that oscillates with period
5 answers
asked by
k
4,843 views
A block and tackle having a velocity ratio of 5 is used to raise a load of 400N through a distance of 10m. If the work done
6 answers
asked by
Michael Nyame
3,630 views
Which of the following correctly describes a sphere?(1 point)
4 answers
asked by
abfrmk3
496 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
216 views
Which statement about electric charges is correct?(1 point)
Responses Two objects with negative charges will attract each other.
1 answer
asked by
Hi
228 views
Use the diagram of a particle accelerator and your knowledge of colliding particles to answer the questions below.
In particle
1 answer
asked anonymously
183 views
A box of mass m = 6kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One piece,
6 answers
asked by
Shahab Mirza
4,488 views
The temperature of earth atmosphere drops 5°C for every 1km elevation above the earth surface. If the air temperature at ground
5 answers
asked by
Eurt
8,224 views
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