Answer:
(b) Pressure= Area\Force
Explanation:
(a) Pressure is the force acting perpendicularly on a unit area of the object.
(b) Pressure= Area\Force
(c) Pressure on an area of 10 m^2
Force = 200 N
Pressure = 200\10 = 20Pa
(ii) Pressure of an area 5m^2
Force = 200 N
Pressure = 200\5 = 40Pa
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What is the speed shown in the graph? which number do i start on?
Answer:
4 m/s
Explanation:
speed = distance/time
speed= 20/5 = 4
similarly for all no. the answer is constant,i.e. 4
A dipole is centered at the origin, with its axis along the axis, so that at locations on the axis, the electric field due to the dipole is given by E = (0, 1/4 pi epsilon_0 2qs/gamma^3, 0) v/m The charges making up the dipole are q_1 = +4 nC and q_2 = nC, and the dipole separation is s = 8 mm. What is the potential difference along a path starting at location p_1 = (0, 0.04, 0) m and ending at location P_2 = (0, 0.05, 0) m?
Answer:
Explanation:
Given that:
[tex]q_1 = + 4nC \\ \\ q_2 = -4nC \\ \\ q = 4nC[/tex]
[tex]P_1 = (0,0.04,0) m\\\\ P_2 = (0,0.05,0) m[/tex]
As [tex]q_1[/tex] [tex]\text{is nearer to }[/tex][tex]P_1 \& P_2[/tex] then [tex]q_2,q_1[/tex] [tex]\text{is positive, Thus}[/tex], [tex]E \limits^{\to}[/tex][tex]\text{ will be along the positive X-axis.}[/tex]
Recall that:
[tex]E ^{\to} = \dfrac{-dV}{dr}\implies E_y = \dfrac{-dV}{dy} \\ \\ = \int^{P_2}_{P_1}dV = -\int \limits ^{(0.05)}_{(0.04)}E_y \ dy \\ \\ \implies (V_{P_2}}-V_{(P_1)}) = \dfrac{-2q_5}{4 \pi \varepsilon _o} \int \limits ^{(0.05)}_{(0.04)} \dfrac{dy}{y^3} \\ \\ \implies (V_{P_2}}-V_{(P_1)}) = \dfrac{-2q_5}{4 \pi \varepsilon _o} \Big[ \dfrac{-1}{2y^2} \Big]^{0.05}_{0.04} \\ \\ \implies (V_{P_2}}-V_{(P_1)}) = \dfrac{q_5}{4 \pi \varepsilon _o} \Big[\dfrac{1}{y^2}\Big] ^{0.05}_{0.04}[/tex]
[tex]\\ \\ \implies (V_{P_2}}-V_{P_1}) = \dfrac{(4\times 10^{-9})(8\times 10^{-3})}{4 \pi (8.854 \times 10^{-12})} \Big [\dfrac{1}{(0.05)^2}-\dfrac{1}{(0.04)^2} \Big ]V \\ \\ (V_{P_2}}-V_{P_1}) = \mathbf{-64.71 \ volts}[/tex]
need physics help
ASAP please!
Answer:
D
Explanation:
A pressure cooker has a mass of 1.5 kg and temperature of 30°C. The specific heat
capacity of the alloy from which the pressure cooker is made up of is 1000/kg
What will be its temperature when 7.5 *10') of heat is supplied to it?
Answer:
hjd
Explanation:
20 N effort is used in the 20 cm long spanner to unscrew a nut , then calculate momentum to unscrew the nut .
Answer:
i am also from Nepal do you want to become friends
Mass is a measure of the amount of
matter in a substance. Which of the
following is TRUE about mass?
A. Mass can be measured using a triple beam balance.
B. Mass and volume can be measured using a
graduated cylinder.
C. Mass and length can be measured using a ruler.
D. Mass and temperature can be measured using a
thermometer.
Answer:
A
Explanation:
Can read mass precisely, commonly reading error of +0.05g
Mass is a measure of the amount of matter in a substance. Mass can be measured using a triple beam balance. Hence option (A) is correct.
What is mass?In physics, mass is a quantitative measurement of inertia, a basic characteristic of all matter. It essentially refers to a body of matter's resistance to changing its speed or location in response to the application of a force. The change caused by an applied force is smaller the more mass a body has. The kilograms serves as the unit of mass in the International System of Units (SI).
The conservation of mass principle states that no matter how an object's component pieces are rearranged, the object's overall mass remains constant. If a body splits into parts, the mass also splits into pieces, therefore the original mass is equal to the sum of the masses of the individual fragments. Alternatively, if two or more particles are combined, the mass of the resulting composite equals the total of the masses of the individual particles. This rule is not always accurate, though.
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Question 19 of 20
Planets A and B have the same size, mass, and direction of travel, but planet
A is traveling through space at half the speed of planet B. Which statement
correctly explains the weight you would experience on each planet?
A. You would weigh less on planet B because it is traveling twice as
fast as planet A.
B. You would weigh the same on both planets because your mass
would adjust depending on the planet's speed.
O C. You would weigh more on planet B because it is traveling twice as
fast as planet A.
D. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
SUBMIT
Answer:
D. You would weigh the same on both planets because their masses
and the distance to their centers of gravity are the same.
Explanation:
The above statement is true due to the fact that, the weight and masses of the individual are same in direct comparison with the distance to their center of gravity. If the weight and masses are not same, then there would have been a significant difference between the two planet.
Can someone please do this for me, I have heavy work for some other classes and can never find time to do this one :/(94 points)
Answer:
dang, you are really trying to get everyone to do your heavy lifting lol.
I'll do coal. and maybe a little more.
Explanation:
Coal What is it?
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen.
Coal How we obtain it:
Coal can be extracted from the earth either by surface mining or underground mining. Once coal has been extracted, it can be used directly (for heating and industrial processes) or to fuel power plants for electricity. If coal is less than 61 meters (200 feet) underground, it can be extracted through surface mining.
Coal Pros:
Coal is plentiful in many places and it is easy to access through mining, so people rely on it to produce energy. Coal is easy to store. Once it is mined it can be safely stored with no hazard of fire or explosion like there is with gas or oil. It is relatively easy and inexpensive to convert coal into energy.
Coal Cons:
Coal is nonrenewable. Coal contains the most CO2 per BTU, the largest contributor to global warming. Severe environmental, social, and health, and safety impacts of coal mining. The devastation of the environment around coal mines is heavy. High cost of transporting coal to centralized power plants. Coal is really dirty and not good.
__________________________________________________________
Solar What is it?
Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.
Solar How we obtain it:
Solar technologies convert sunlight into electrical energy either through photovoltaic (PV) panels or through mirrors that concentrate solar radiation. This energy can be used to generate electricity or be stored in batteries or thermal storage.
Solar Pros:
It's clean energy. Solar power is pollution-free and causes no greenhouse gases to be emitted after installation. It has reduced dependence on foreign oil and fossil fuels. It is renewable clean power that is available every day of the year, even cloudy days produce some power. It gives a return on investment unlike paying for utility bills.
Solar Cons:
Solar doesn't work at night. Solar panels are not attractive. You can't install a home solar system yourself. My roof isn't right for solar. Solar hurts the environment. Not all solar panels are high quality.
14) What is the velocity of a wave 5.35 x 10 cm long with a frequency of 16kHz
Answer:
wavelength= 5.35×10cm=0.535m
f= 16000hz
v= wavelength × f= 0.535×16000=8560m/sec
If an object is placed 50 cm in front of a concave mirror of 60 cm radius, what is the image size if object size is 15cm?
Answer:
V=22.5cm
Explanation:
The 25-mph zone is 150 yards long. How much time did the student save (in seconds) by speeding past the school
Answer:
Time = 12.27seconds
Explanation:
Given
Speed = 25miles/hour
Distance = 150 yards = 150(0.000568182)miles
Distance (in miles) = 0.0852273miles
Get the time
Speed = Distance/Time
Time = Distance/Speed
Time = 0.0852273/25
Time = 0.0034hours
Time = 0.0034 * 3600secs
Time = 12.27seconds
Why is the sky blue?
Why does the moon appear in the daytime?
How much does the sky weigh?
How do airplanes stay in the air?
Why is water wet?
Why don't birds get electrocuted when they land on an electric wire?
Answer:
the sky is blue because of reflection of blue light of sea and ocean.
the moon appear in the daytime because light of sun is brighter than of moon
airplanes stay in the air by maintaining balance in air and gravity.
birds did not get electrocuted when they land on an electric wire because there body is non conductor.
Why does a lunar eclipse last for a few hours whereas a solar eclipse only lasts for a few minutes?
Select one:
a.
The moon takes more time to travel through the earth’s umbra.
b.
Because the moon is moving much more slowly than the sun.
c.
Solar and lunar eclipses actually last about the same time.
d.
Because the sun is stationary and the moon is moving.
Answer:
The type and length of a lunar eclipse depend on the Moon's proximity to either node of its orbit. ... A total lunar eclipse can last up to nearly 2 hours, while a total solar eclipse lasts only up to a few minutes at any given place, due to the smaller size of the Moon's shadow.
yo pls help me I'm desperate lowkey
What is the kinetic energy of a 0.500 kg toy car moving at a state of 1.50 m/s
Answer:0.563
Explanation:
The kinetic energy produced in a toy car is equal to 0.563 J.
What is the kinetic energy and potential energy?The energy exhibited by a moving body because of its motion is said to be its kinetic energy. Work should be done which can change the kinetic energy of a moving object.
The kinetic energy of a moving object can be determined from the formula mentioned below:
K.E. = ½mv² where ‘m’ and ‘v’ is the mass, velocity of the object.
Potential Energy (P.E.)is energy that is stored in an object due to its position and can be expressed as P.E = mgh where h, m, and g are the height, mass, and gravitational acceleration respectively.
Given, the mass of the toy car =, m = 0.500 Kg
The velocity of the toy car, v = 80 m/s
The kinetic energy = (1/2)× 0.500 ×(1.50)²
K.E. = 0.563 J
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define amplitude of sound
which statement is the most correct statement about a gas
A gas takes the shape of it's container
A gas is not affected by changes in pressure
A gas has very little thermal energy
A gas holds it's shape
Answer:
A gas takes the shape of its container
A list of heat transfer examples are listed below. Which is NOT an example of convection?
A. Water boiling in a pot
B. Lava in a lava lamp moving
C. Hot pavement burning your feet
D. A hot air balloon rising
I’ll give Brainliest!
Answer:
C. Hot pavement burning your feet
Explanation:
Convection is a type of process where heat travels upwards and cold travels downwards.
What element atomic number is in Group 17 and Period 6?
[tex] \\ [/tex]
The halogen elements are the six elements in Group 17 of the periodic table. Group 17 is the second column from the right in the periodic table and contains six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (As), and tennessine (Ts).
[tex] \\ [/tex]
Hope It Helps!
Chemical changes occur as energy is transferred when molecules- - or - to form one or more new substances
Answer:
Correct options are C. As food is digested, molecule bonds are broken, allowing new molecules to form that can be used by our bodies.
D. Energy stored in organic fuels are used for heat and electricity/ When batteries are connected to a circuit, a reaction occurs inside the cell producing electrical energy.
Explanation:
The breakdown of food leads to the release of chemical energy which was first stored in food. This energy is used to drive necessary functions of the body. A series of chemical reactions are involved in the breakdown of food and changing them into useful components for the cell.
Chemical energy is stored in circuits. When the battery is connected to a circuit, the chemical energy gets transferred into electrical energy.
Answer:
change, combine
Hi! Can somebody please help?
Answer:
Diagram A will reach the top first.
Explanation:
If it is going straight, it will go slower. The higher the movement speed the faster it is. Hope this helps!
Rosita started riding her bike 3 km to her friend Gena’s place at exactly the same time Gena started skating to Rosita’s house. Gena, of course, wasn’t home, so Rosita rode back home. The two girls arrived at Rosita’s house at the same time. It took Rosita 30 minutes to ride to Gena’s and back. How fast did Gena skate?
Answer:
6km/hr
Explanation:
Lets make a chart
R. G
D 6km. 6 /2=3km
S. 6/1/1= 12 km/h. 6km/h= 3/1/2
T 1/2hr 1/2hr
so 6km/hr hope that helps if it does please mark as brainliest.
A horizontal pipe of diameter 0.933 m has a smooth constriction to a section of diameter 0.5598 m. The density of oil flowing in the
pipe is 821 kg/m3. If the pressure in the pipe is 7220 N/m2 and in the constricted section is 5415 N/m2, what is the rate at which oil is flowing?
Answer in units of m3/s.
Answer:s
Explanation:
Are stairs a type of inclined plane?
Answer:
Inclined planes are simple machines used to make work easier. Ramps, ladders, and staircases are all inclined planes.
Explanation:
Answer:
imma say yes
Explanation:
Can someone help with this? (Picture above)
Answer:
Element #1
protons = 1
neutrons = 0
electrons = 1
atomic number = 1
atomic mass = 1
Element #2
protons = 2
neutrons = 2
electrons = 2
atomic number = 2
atomic mass = 4
Element #3
protons = 3
neutrons = 3
electrons = 3
atomic number = 3
atomic mass = 6
Explanation:
Atomic mass = proton = electrons at neutral state
please give me brainliest if my answer is helpful
4
(a) Which arrow shows the amplitude of the wave?
(1 mark)
Answer:
hmmm, where is the image?
but still let me tell you
Explanation:
amplitude of a wave is the maximum displacement of a particle from its rest position
so the arrow should be from the middle of the wave to the top of the crest or to the bottom trough,
from the middle
okay?
hope this helps, but be sure to add the image next time
A light wave with a long wavelength has _____ energy.
A baseball player slows down as he slides to base is he balanced or unbalanced?
Answer : this pretty much gives you the answer Lol
Explanation:
Fundamentals. When the forces acting upon an object are balanced, the object will maintain its state of motion; that is, its velocity remains constant. If the forces are unbalanced, the object will either speed up or SLOW DOWN. ... And if an object is speeding up or slowing down, the forces are unbalanced.
What is the kinetic energy of a 2.1kg baseball and is traveling at 10 m/s?
Answer:
Explanation:
KE = 1/2mv^2
KE = 1/2(2.1)(10)^2
KE=105N
please help anyone i will mark brainliest