Answer:
Work
Explanation:
The use of force to move an object is the definition of "work" in physics.
Answer:
the answer should be wave
A force of 0.8 newton causes a spring to extend by 4 cm. What is the spring constant?
20 N per meter
56 N per meter
32 N per meter
40 N per meter
Answer:
20 N per meter
Explanation:
k = Fe
f = 0.8N
e = 4cm change to m = 4 ÷ 100 = 0.04
0.8 ÷ 0.04 = 20 N per meter
A square tile having 50cm side is made to withstand a pressure of 200N/m^2 find out if a force of 45N can be applied on the tile
Explanation:
Given that,
Side of a square tile, a = 50 cm = 0.5 m
Pressure withstand by it, P = 200 Pa
We know that,
Pressure = force/area
[tex]F=P\times A\\\\=200\times (0.5)^2\\\\=50\ N[/tex]
It is the force that tile withstand is 50 N. The force applied upon the time is 45 N. As 45 N can be applied on the tile because 45 N < 50 N.
What are the properties of a concave mirror
Answer:
Concave mirrors produce real and virtual images.
Explanation:
(Concave mirrors can produce both real and virtual images)
They can be upright (if virtual) or inverted (if real)
They can be behind the mirror (if virtual) or in front of the mirror (if real)
T hey can also be enlarged, reduced, or the same size as object.
Answer:
Some properties of the given mirror are summarized in the below portion.
Explanation:
Unless the material is dropped between some of the focus as well as the mirror:Throughout that particular instance, the ground image component is immersive but instead larger than those of the attribute and it has a similar orientation as the attribute.
Unless the object is located between some of the center point of that same mirror as well as the focus area:Throughout this particular instance, the mirror version is genuine and larger than that of the attribute. In additament, the image formation was therefore reversed.
When you're super tired and you lose energy, what energy are you actually losing?
I said Physics class, but it's really for Science class.
Answer:
it is chemical energy
Explanation:
that is the energy used by our body, so it is the one that we will loose. and the energy that we gain is also chemical energy
Discribe the law of reflection
Answer:
the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.
Explanation:
A microscope uses a mirror to reflect light to the specimen under the microscope. ... An astronomical reflecting telescope uses a large parabolic mirror to gather dim light from distant stars. A plane mirror is used to reflect the image to the eyepiece.
Calculate the magnitude of the gravitational force between Goku with a mass of 62 kg and King Kai’s planet with a mass of 1.458x1015 kg if the distance between their centers of mass is 31 m.
Answer:
6227.866 N
Explanation:
F = G . m(goku) . m(planet) / d²
F = 6.674 x 10-¹¹ x 62 x 1.458 . 10¹⁵ / 31²
F = 6227.866 N
A student who weighs 500 N on Earth travels to a planet whose mass and radius are twice that of Earth. His weight on that planet is about
A. 1000 N
B. 500 / V2 N
C.500 N
D. 250 N
Answer:
B
Explanation:
Weight of the student on that planet is about 250 N. option (D) is correct.
What is Newton’s universal law of gravitation?Newton's universal law of gravitation states that the force of attraction between any two bodies is inversely proportional to the square of the distance between them and directly proportional to the product of their masses.
Let the mass of the student be m.
Mass of the Earth = M.
Radius of the Earth = R,
So, gravitational force applied on the student on Earth surface :
GMm/R² = 500 N.
Again,
mass of the planet = 2M
Radius of the planet = 2R.
So, gravitational force applied on the student on the surface of the planet = G(2M)m/(2R)²
= 1/2 {GMm/R²
= 1/2 × 500 N
= 250 N.
Hence, His weight on that planet is about 250 N. option (D) is correct.
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Two tougboats are toeing a ship each exerts a force of 6000N and the angle between the two ropes is 60 calculate the resultant force on the ship
Answer:
10392.30N
Explanation:
We proceed by computing the individual force exerted by the boats
For the first boat
The angle is 30 degree to the vertical
Hence
Force = F cos θ
F=6000 cos 30
F=6000*0.866
F=5196.15 N
Since the boats are two and also at the same angle and also exerting the same force
The Net force = 2*5196.15
Net force=10392.30N
State the meaning of specific heat capacity of copper is 380 J/kg°C.
Answer:
Specific heat capacity means that in order to raise copper by 1C per kg, it needs 380J of heat energy.
do all objects have inertia
a) true
b) false
Answer:
The answer is A. Which is true
Boo help me please!!!!!!!
Answer:
??
Explanation:
Which of the following will change the strength of a magnetic field?
1.increase speed
2.change the amount of electric current
3.remove atoms
4.it is always the same
2. change the amount of electric current
The moon is significantly smaller than the sun. Why is the moon able to fully block the sun from our view on
Earth?
Answer:
The moon is 400x smaller but it's also 400x closer so it looks the same size even though it's not
Explanation:
To solve this we must be knowing each and every concept related to moon. Therefore, the moon is able to fully block the sun from our view on earth as it is 400 times.
What is moon?Any celestial object that revolves around a planet, such as the eight main planets, dwarf planets, or minor planets, is referred to as a moon. In order to distinguish the moon from other celestial bodies that circle other bodies, the term "natural satellite" may also be used to describe the moon.
The Galilean moons orbiting Jupiter, called after astronomer as well as discoverer Galileo Galilei, were the first moons found outside of the moon of Earth. The moon is significantly smaller than the sun. The moon is able to fully block the sun from our view on earth as the moon appears the same size despite the fact that it's 400 times smaller because it is 400 times closer and hence smaller.
Therefore, the moon is able to fully block the sun from our view on earth as it is 400 times.
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HELP PLS i need this
Answer:
here you have to find the range
Explanation:
[tex]range=\frac{u^{2}sin2\theta }{g}[/tex]
[tex]\frac{4.22^{2} * sin2(63) }{10}[/tex]
1.4431m
Pollen is one celled, or unicellular. It is used for reproduction in many types of plants. The bee is collecting nectar and, while doing that, is transferring the very tiny pollen grains The bee and the flowering plant are multicellular organisms, but they both have many things in common with the unicellular pollen What is one feature NOT shared by all three! All are made of one or more cells. The cells of each contain genetic material The cells of each contain exactly the same parts A cell membrane controls what goes in and out of the cells 9 Hierarchical Organisation SA PREP ITEST PREP PAX 1-877.816-0808 PHONE 1-877.377.953 Read Our Blog Meet Our Teachers Privacy Policy O USA Testprep LC 2030 A Rights Reserved
Answer:
This question is unclear, however, the answer to the initial clear part is:
The cells of each contain exactly the same parts
Explanation:
Thee three organims/structures mentioned in this question are: bees, flowering plants and pollen. Based on the information provided in the question, they all contain one (unicellular) or more (multicellular) cells.
However, considering the fact that bees are made up of animal cells while pollen and flowering plants are made up of plant cells, the cells of each will not contain exactly the same parts. For example, bees do not have chloroplasts in their cells while flowering plants do.
Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer?
Electromagnetic waves can carry energy through matter.
Electromagnetic waves can travel through empty space.
Electromagnetic waves can move through gases faster than other types of energy transfer.
Electromagnetic waves can move more energy than other types of energy transfer.
Answer:
Electromagnetic waves can travel through empty space.
Explanation:
Electromagnetic waves are defined as the waves that are created due to the vibrations between a magnetic field and an electric field.
Earth atmosphere is made up of several gases and spaces between them. Thermal energy from the sun require to pass through space by electromagnetic radiation. Electromagnetic waves can travel through empty space and that is why other type of waves are unable to transfer thermal energy.
Hence, the correct answer is "Electromagnetic waves can travel through empty space".
Answer:
Electromagnetic waves can travel through empty space.B.Explanation:
Please answer faast!!!
Answer:
Any medium or material of high refractive density e.g Water which refracts the light rays 1&2 away from their normal
in which unit is atmospheric pressure measured?
Answer:
Originally Answered: What is the unit of measurement of pressure in the atmosphere? The SI derived unit of pressure is the pascal , abbreviated Pa. This is a pressure exerted by a force of 1 newton acting over an area of 1m².
Explanation:
Hope this helps you a lot my boo!
A box slides down a ramp inclined at 24◦ to the horizontal with an acceleration of 1.7 m/s 2 . The acceleration of gravity is 9.8 m/s 2 . Determine the coefficient of kinetic friction between the box and the ramp.
Answer:
0.445Explanation:
In friction, the coefficient of friction formula is expressed as;
[tex]\mu = \frac{F_f}{R}[/tex]
Ff is the frictional force = Wsinθ
R is the reaction = Wcosθ
Substitute inti the equation;
[tex]\mu = \frac{Wsin \theta}{W cos\theta} \\\mu = \frac{sin \theta}{cos\theta} \\\mu = tan \theta[/tex]
Given
θ = 24°
[tex]\mu = tan 24^0\\\mu = 0.445\\[/tex]
Hence the coefficient of kinetic friction between the box and the ramp is 0.445
A ball having a mass of 0.20 kilograms is placed at a height of 3.25 meters. If it is dropped from this height, what will be the kinetic energy of the ball when it reaches 1.5 meters above the ground?
A.
1.2 joules
B.
2.2 joules
C.
3.4 joules
D.
3.6 joules
E.
4.3 joules
Answer:
C.
3.4 joules
Explanation:
Answer for Plato and edmentum
give the relation of resistance of wire with the length and thickness.
Answer:
The answer to this question is given below in the explanation section.
Explanation:
Give the relation of resistance of wire with the length and thickness:
Resistance:
There is a resistance to the flow of an electric current through most conductors.
The length of wire increases
The thickness of wire decreases
The resistance of a long wire is greater then the resistance of a short wire because electrons collide with more ions as they pass through.
The relationship between resistance and wire length is proportional. The resistance of thin wire is greater then the resistance of a thick wire because a thin wire has fewer electrons to carry the current.The relationship between resistance and the area of the cross section of wire is inversely proportional.
Tsunami waves are caused by earthquakes in the ocean floor. As the waves approach the shore, they usually grow in height. When this occurs, which aspect of the wave is changing?
A. amplitude
B. direction
C. frequency
D. speed
E. wavelength
Answer:
LETTER A. AMPLITUDE
:)
Answer:
A
Explanation:
A. about 1.8
B. about 9.1
C. about 18.1
D. about 28.3
Please help me
Answer:(b)
Explanation:
Given
GK=16 units
KH=y units
using Sine rule
[tex]\frac{\sin G}{y}=\frac{\sin H}{16}\\\frac{\sin 30^{\circ}}{y}=\frac{\sin 62^{\circ}}{16}\\y=16\times \frac{\sin 30^{\circ}}{\sin 62^{\circ}}\\\\y=16\times \frac{0.5}{0.883}\\y=9.06\ \approx \ 9.1\ units[/tex]
You get a job delivering water. You calculate how much work is done picking up each 20 L bottle of
water and raising it vertically 1 m. For every 100 bottles you deliver, you will use Select.... (g =
9.8 m/s2)
-196J
-2,000 J
-19,600 J
-196,000J
Answer:
The work done by picking up 100 20-L bottles and raising it vertically 1 meter is 19614 joules.
Explanation:
By the Work-Energy Theorem, the work needed to raise vertically 100 bottles of water is equal to the gravitational potential energy, units for work and energy are in joules:
[tex]\Delta W = \Delta U_{g}[/tex] (1)
Where:
[tex]\Delta W[/tex] - Work.
[tex]\Delta U_{g}[/tex] - Gravitational potential energy.
The work is equal to the following formula:
[tex]\Delta W = n\cdot \rho \cdot V \cdot g \cdot \Delta h[/tex] (2)
Where:
[tex]n[/tex] - Number of bottles, dimensionless.
[tex]\rho[/tex] - Density of water, measured in kilograms per cubic meter.
[tex]V[/tex] - Volume, measured in cubic meters.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
[tex]\Delta h[/tex] - Vertical displacement, measured in meters.
If we know that [tex]n = 100[/tex], [tex]\rho = 1000\,\frac{kg}{m^{3}}[/tex], [tex]V = 0.02\,m^{3}[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]\Delta h = 1\,m[/tex], then the work done is:
[tex]\Delta W = (100)\cdot \left(1000\,\frac{kg}{m^{3}} \right)\cdot (0.02\,m^{3})\cdot \left(9.807\,\frac{m}{s^{2}} \right)\cdot (1\,m)[/tex]
[tex]\Delta W = 19614\,J[/tex]
The work done by picking up 100 20-L bottles and raising it vertically 1 meter is 19614 joules.
How much power does a machine have that does 15204 J of work in 40 seconds?
Explanation:
since P=W/t
P=15204/40
P=380.1 Watt
Atoms have no electric charge because they
A. Have an equal number of charged and non charged particles.
B. Have neutrons in their nuclei.
C. Have an equal number of electrons and protons
D. Have an equal number of neutrons and protons
Atoms have no electric charge because they have an equal number of electrons and protons.
Explanation:
Atom is the smallest unit of matter.It is comprised of three subatomic particles: protons, electrons, and neutrons.Electrons are found outside the nucleus of an atom and are negatively charged.Protons are found inside the nucleus of an atom and are positively charged.Neutrons are found inside the nucleus of an atom and have no charge.They are electrically neutral because they have an equal number of protons and electrons.So from this, we can conclude that atoms have no electric charge because they have an equal number of electrons and protons. Option C is correct.
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A 4.0 kg object will have a weight of approximately 14.8 N on Mars. What is the gravitational field strength on M
Answer:
Gravitational field strength =weight/mass
Explanation:
14.8N/4.0kg
3.7N/kg
How do labels protect us at the grocery store? Will gove Brainliest to RIGHT answer :)
to guide us on where stuff are or what the stuff are called and used for
the diagram shows a force being applied to a lever to lift a heavy weight. What change would enable the heavy weight to be lifted with a smaller force
Move the force to the right.
Ifa cup of coffee is at 90°C and a person with a body temperature of 36°C touches it, how will heat flow between
them?
O from the hand to the cup
O from the cup to the hand
O from the cup to the surrounding air
O from the hand to surrounding air