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Physics
Page 68
Questions (147,592)
waves of frequency 20 hz are generated along spring. the distance between successive crests and troughs is 0.45m
4 answers
asked by
지성/jisung
1,398 views
An empty relative density bottle has a mass of 30g. When filled with paraffin,its mass is 70g. Calculate the mass of the bottle
5 answers
asked by
Zaynab
2,944 views
Newton’s law of cooling states that the rate of cooling of an object is proportional to the temperature difference between the
3 answers
asked by
Anonymous
3,497 views
.100 KG of an unknown metal at 94°C is placed in 100 g of water at 10°C the final temperature of the metal and water are at
4 answers
asked by
Michaela
731 views
A particle moves on a straight line. The velocity after t seconds is given by V= 3t^2 – 6t – 8.
The distance of the particle
3 answers
asked by
kudu
2,458 views
no idea how to do this problem
A kid at the junior high cafeteria wants to propel an empty milk carton along a lunch table by
3 answers
asked by
Levin Need help for test!
2,245 views
A Blowhard Tests of lung capacity show that adults are able to exhale 1.5 liters of air through their mouths in as little as 1.0
3 answers
asked by
Brady
2,101 views
A hollow tube having an inside diameter of 2.5 cm and a wall thickness of 0.4 mm is exposed to an environment at h=100 W/m2¨¬C
3 answers
asked by
RHS
978 views
20.00 cm of space is available. How long a piece of brass at 20°C can be put there and still fit at 200°C? Brass has a linear
3 answers
asked by
shirly
1,441 views
On an unknown planet, a pendulum of length 1.5 m swings with a period of 3.3 s. What is the acceleration of gravity on this
3 answers
asked by
Rachell
1,487 views
If the total positive charge is Q = 1.62×10−6C , what is the magnitude of the electric field caused by this charge at point
3 answers
asked by
James
3,112 views
Microwave ovens emit microwave energy with a wavelength of 12.5 cm. What is the energy of exactly one photon of this microwave
4 answers
asked by
Kiana
3,615 views
Suppose that we repeat the experiment shown in the video, but we replace one of the cylinders with a cylinder that has twice the
4 answers
asked by
H
3,120 views
Which of the following best describes the heat engine?
A. A heat engine works through the conversion of energy in the form of
4 answers
asked by
Anonymous
1,869 views
The index of refraction of a certain type of glass is 1.58 what is the speed of light in the glass ?
3 answers
asked by
amy
1,428 views
A ball of mass 522 g starts at rest and slides down a frictionless track, as shown below. It leaves the track horizontally,
4 answers
asked by
Angela
6,778 views
An electron is located on a pinpoint having a diameter of 2.04 µm. What is the minimum uncertainty in the speed of the
3 answers
asked by
na
1,212 views
James Joule once attempted to measure the increase in temperature of the water in a waterfall resulting from its decrease in
3 answers
asked by
Alex
1,435 views
A 515 cm3(cm cubed) block of aluminum (D = 2.7 g/cm3) is lowered carefully into a completely full beaker of water. What is the
4 answers
asked by
Alaine'
853 views
The strength S of a rectangular beam varies jointly as its width w and the square of its thickness t. If a wood beam 3 inches
6 answers
asked by
Carla
5,574 views
Water is flowing in a pipe as depicted in the figure. As shown, p = 117 kPa, d = 4.67 cm, d' = 3.06 cm, v = 4.36 m/s, and h =
3 answers
asked by
please help me
1,997 views
in a making a graph showing the stretch of a spring:
Plot a graph of force vs. stretch. Find the slope. The Slope of the graph is
4 answers
asked by
Kriti
1,549 views
A sample of air occupies 3.8 L when the pressure is 1.2 atm.
(a) What volume does it occupy at 7.3 atm? (b) What pressure is
3 answers
asked by
Alex
1,337 views
How much work must be done to accelerate an 8x105 kg train: a) from 10 m/s to 15 m/s; b) from 15 m/s to 20 m/s; c) to a stop an
3 answers
asked by
Lesley
472 views
A steel wire, 150 m long at 10°C, has a coefficient of linear expansion of 11 ´ 10-6/C°. Give its change in length as the
4 answers
asked by
Jesse
3,199 views
If 75 g of ice at 0.0 C were added to 1.5 L of water at 75 C, what would be the final temperature of the mixture?
3 answers
asked by
Vanessa
1,495 views
In the photoelectric effect, does brightness or frequency determine the Kinetic energy of the ejected electrons? Which
3 answers
asked by
coach
2,169 views
The "work function", or the minimum energy needed to eject an electron from the metal, can be expressed in several different
3 answers
asked by
TITA
957 views
You exert a force of 455N in pulling 15.0m of rope using a pulley system to lift a 935N object 5.0m. What is the efficiency of
4 answers
asked by
Cynthia
1,929 views
What will cool iron faster, water or motor oil?
3 answers
asked by
Anonymous
1,113 views
This question came up on my review package tonight, and it has me stumped.
"A box of mass 14.5kg slides at a constant speed of
4 answers
asked by
solexgirl12
569 views
A bat flying at 5.0 m/s emits a chirp at 35 kHz. If this sound pulse is reflected by a wall, what is the frequency of the echo
4 answers
asked by
Elisa
1,627 views
In the figure, forces A, B, C and D each have magnitude 50.0 N and act at the same point on the object. What torque (magnitude
3 answers
asked by
Erin
952 views
I thought I did the problem right, but I don't think I came out with the right answer! Please someone check to see if I got this
3 answers
asked by
Emily
937 views
when excerising using a spring you pull the spring 0.30m with a force of 365N. What distance will the spring stretch from its
3 answers
asked by
Tabitha
646 views
How does the distance between charged objects affect the electric force between them?
3 answers
asked by
Carmen
137 views
When you jump you extend a punching force against the ground gravity pulls you back down why can't a person jump higher on the
3 answers
asked by
Amy
116 views
What is accomplished by this simple pulley
4 answers
asked anonymously
501 views
1. A science class is planning an investigation about gravity and objects on Earth. In three to four sentences, explain the
3 answers
asked by
( o=^•ェ•)o ┏━┓
1,106 views
What is the strong nuclear force?
a force that governs how elements break down naturally a force that attracts objects with mass
3 answers
asked by
b
1,031 views
The "***" is my answer
3.Which list correctly orders effort (E), fulcrum (F), and load (L) for each lever class? A. class 1 = F,
4 answers
asked by
HELP ASAP
1,213 views
The density of a cork of mass 24g and volume 100cm³. What would its density be if its volume increases to 200cm³
3 answers
asked by
Anonymous
294 views
A man stands on the bathroom scale and the reading is 85 kg: what is this man's mass?
3 answers
asked by
Kgothatso
340 views
Nathan is walking to the store and sees a snake slithering across the sidewalk. He jumps over it with an initial vertical
4 answers
asked by
Ashlynn
297 views
. An object has an excess charge of −8, 6 × 10−18 C. How many excess
electrons does it have?
4 answers
asked by
Isabella
998 views
A particle of mass 5m moving with speed v explodes and splits into two pieces with masses of 2m and 3m. the lighter piece
3 answers
asked by
Samiya
678 views
A body accelerates uniformly from rest at 2ms-2. Calculate its velocity when it has traveled a distance of 9m
3 answers
asked by
gabby
543 views
a concave shaving mirror is construction so that a man at a distance of 20cm from the mirror sees his image magnified 1.5 times
4 answers
asked by
Anonymous
2,967 views
A hockey puck B rests on frictionless, level ice and is struck by a second puck A, which was
originally traveling at 40.0 m/s and
4 answers
asked by
david
1,106 views
A 410-g cylinder of brass is heated to 95.0°C and placed in a calorimeter containing 335 g of water at 25.0°C. The water is
4 answers
asked by
Allie
999 views
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