Answer:
A concave mirror is used in torch lights because the light ray from the source is placed on the focus of a concave mirror.
A physical quantities?
a)cannot be measured
b)Can be expected in the form of low.
c)can be represent completely by its magnitude and unit
d)Both B and C
Answer:
B and C
Explanation:
Both B and C should be the answer
Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation:
(
)Zn + (
)HCl → (
)ZnCl2 + (
)H2
Answer:
Given equation
[tex]\\ \sf\longmapsto Zn+HCl\longrightarrow ZnCl_2+H_2[/tex]
Balanced equation
[tex]\\ \sf\longmapsto Zn+2HCl=ZnCl_2+H_2[/tex]
Reactant side:-
Zn=1Cl=2H=2Product side:-
Zn=1Cl=2H=2Hence balanced
Answer:
1 2 1 1
Explanation:
True or false: Earth's 23.5-degree axial tilt is likely due to being hit by a large planetary object early in its formation history.
Answer: True
Explanation: There is a theory that it smashed into another, smaller, planet, early on in its career. That gave it its tilt, and the debris went on to form the Moon.
The position-time graph for two drivers (A and B) are shown in the figure below. Which of the following statements is correct?
a. The two drivers are for sure moving in parallel directions
b. Driver B is moving faster than driver A.
c. Driver A is moving faster than driver B.
d. The two drivers are moving at the same speed
Answer:
A
Explanation:
H is a chemical (blank) and H2 is a chemical (blank)
Please I need help!
Answer:
"H" is a chemical symbol and "H2" is chemical formula.
the acceleration due to gravity is caused by a field force. TRUE OR FALSE?
Answer:
I think it's true,,
Explanation:
maybeee truee
29.92 inches of mercury and 101,325 pascals are both equivalent to 1 atmosphere of pressure. Calculate the number of pascals equivalent to 1 inch of mercury.
The number of pascal equivalent to 1 inch of mercury is 3386.53 pascal
From the question given above, we were told that:
29.92 inches of mercury = 1 atm
101325 pascal = 1 atm
Thus,
29.92 inches of mercury = 101325 pascal
With the above information, we can obtain the number of pascal equivalent to 1 inch of mercury. This can be obtained as follow:29.92 inches of mercury = 101325 pascal
Therefore,
1 inches of mercury = 101325 / 29.92
1 inches of mercury = 3386.53 pascalThus, the number of pascal equivalent to 1 inch of mercury is 3386.53 pascal
Learn more: https://brainly.com/question/12663234
see screen shot....momentum in collision
Please find attached photograph for your answer.
Hope it helps.
Do comment if you have any query.
You fill a 22-cm-tall container with glycerol so that
the glycerol (density 1260 kg/m) reaches the
11-cm mark. You place an oak cube
(density 900 kg/m) into the container. Ech side
of the cube is 11 cm.
50 POINTS WASTED IMAO
Which statement identifies the chemical property of iron that results in the formation of rust?
A. It is nonflammable.
B. It reacts with oxygen to form a new substance.
C. It has a very high melting point.
D. It conducts electricity.
Answer:
B, It reacts with oxygen to form a new substance
Explanation:
B
Lowest energy?________(^_^)
Answer:
Ground state
Ground state should be the lowest energy
HELPPPPP PLZZZZZ
A 14300 kg airplane is flying at an altitude of 497 m at a speed of 59.4 m/s. Determine the airplane's total mechanical energy.
A car was traveling on a straight road at a constant speed of 50 kilometers per hour. Over the next two minutes, the car came to travel 80 kilometers an hour. Which of the following is true?
The acceleration of the car over the 2 minutes is 0.07 m/s².
Acceleration of the car
The acceleration of an object is the rate of change of velocity of the object with time.
Acceleration of the car over the 2 minutesThe acceleration of the car over the 2 minutes is calculated as follows;
a = Δv/t
a = (v - u) / t
where;
v is the final velocity = 80 km/h = 22.22 m/su is the initial velocity = 50 km/h = 13.89 m/st is the time of motion, = 2 mins = 120 sa = (22.22 - 13.89) / 120
a = 0.07 m/s²
Thus, the acceleration of the car over the 2 minutes is 0.07 m/s².
Learn more about acceleration here: https://brainly.com/question/14344386
help me please eeeee
Answer:
I asked the same question
what would be Vy and pllzzzzzzz help
Answer:
2400m/s , 2240,2080,1920m/s
What did you observe when clear water was poured on the soil around the well? Explain whether it matched your prediction.
Answer:
When water is added to soil, it can replace the oxygen that is naturally in the soil, and make the soil darker. This means wetter soil will have less oxygen compared with drier soil. When enough water is added, soil can become saturated and the water will start to form a layer on top of it.
Explanation:
Collision 2: Blue Cart Moving Slower than the Red Cart
Set the initial blue cart velocity to less than the red cart velocity. Position the blue cart in the middle of the track. Use
different mass values. Run the simulation and record the mass and velocity values.
Answer:
this is what i always used
Explanation:
http://www.sjutsscience.com/uploads/3/7/4/5/37458459/phet_collision_lab_2020_key.pdf
An object on Earth weighs 600 N and on Mars 100 N. If its mass on Earth is approximately 60 kg what is the mass of the object on Mars?
Answer:
I think its
10 kg
plzz plzz plzz. mark as brainliest
If the mass of an object is approximately 60 kg on earth then its mass remains the same on Mars which is 60 kg because mass does not change from place to place.
What is mass?Mass in physics is a numerical representation of inertia, a fundamental property of all matter. What a body of matter is fundamentally is the resistance it offers to a change in its speed or location brought on by the application of a force. The more mass a body has, the less of a change a force exerts results. The kilogram is the unit of mass in the International System of Units, and it is defined by Planck's constant as being equal to 6.62607015 × 10⁻³⁴ joules second (SI).
According to the question, the weight of an object depends on gravity which is different from place to place so weight also varies from place to place but the mass is constant everywhere it does not change. So, if the mass of an object is 60 kg on earth then it remains the same on mars also.
To get more information about Mass :
https://brainly.com/question/19694949
#SPJ5
what is pole of magnet
and
define the term magnetic line of force
Answer:
1. The magnetic pole is the region at each end of a magnet where the external magnetic field is the strongest.
2. magnetic line of force - a line of force in a magnetic field. field line, line of force - an imaginary line in a field of force; direction of the line at any point in the direction of the force
Explanation:
Express 10−2 phones in microphones.
Answer in units of µphone.
Answer:
10^4 microphones
Hope it helps
Explanation:
10^-2 phones
= 10^(6-2)
= 10^4 microphones
You and your dad are pushing your car out of the mud. You apply a force of 200 N and your dad applies a force of 250 N. What is the net force? Will the car move and if so, in what direction?
A. 450 N, yes, in the direction of the pushing
B. 0 N, no
C. 50 N, yes, in the direction of the dad
Answer:
I believe it's A (450 N)
Explanation:
Since both you and your dad are pushing in the same direction, you must add the force N to get the net force, which in this case in 450 N
Alice and Julio’s company makes protective coverings for off-roading vehicles. Alice’s job involves harvesting a natural polymer from trees. Julio’s job is to take that material and change it chemically to create a synthetic polymer.
Which materials do Alice and Julio most likely work with?
Alice works with vulcanized rubber, and Julio works with natural rubber.
Alice works with natural rubber, and Julio works with vulcanized rubber.
Alice works with cellulose, and Julio works with nylon.
Alice works with nylon, and Julio works with cellulose.
Answer:
Alice works with natural rubber and Julio works with vulcanised rubber.
Explanation:
Natural rubber is a polymer from tree.So it satisfies the profession of Alice.vulcanised rubber is artificial or synthetic polymer.So it satisfies the profession of JulioAnswer:
B. Alice works with natural rubber, and Julio works with vulcanized rubber.
Explanation:
I just took the test and got 100 percent.
I hope this helps you!!!!
Please mark my answer the Brainiset. Thank You!!!!!
Help! Are these pictures below considered an Electromagnetic or a Mechanical waves?
Answer: For both of them the answer is electromagnetic waves.
Explanation: Hope that helps!
If the volume of the gas increases from 600 to 800 in. 3, by how much does the pressure change?.
Answer: decreases by 7.5
Explanation:
How are electrical energy, thermal energy, and mechanical energy related?
Answer:
motion of molecules
Explanation:
I believe that is true
The lithosphere is a rigid layer made of Earth's entire crust and the very top part of Earth's mantle. This rigid layer is divided into several large pieces, or plates. The lithospheric plates float on top of the _______, which is a weak part of the mantle that flows slowly.
Answer:
dxfgjcfygu.h
Explanation:
so sorrymcgvlg;uh'ijuoi'ogf;yulcfxkchgvjhgijuiu
y'i;fyltkxfgchghui
uy8't;fultdyk
the average speed of a runner in a 483. meter race is 3.0 meters per second. How long me runner to complete the race? Dont include units, round nearest whole number.
Answer:
161
Explanation:
[tex]v=\frac{d}{t}[/tex] slove for t
[tex]t=\frac{d}{v}[/tex]
Insert values of d and v
[tex]t=\frac{483}{3} \\[/tex]
t=161
explain why energy from the sun cannot reach us by conduction or convection?
Answer:
It cannot reach us by conduction or convection as there is no medium such as air in most part of the space between the earth and the sun. From the sun the heat comes to us by another process known as radiation. The transfer of heat by radiation does not require any medium.
Answer:
Heat can't be transferred from sun to earth by conduction, because air is a bad conductor of heat. Convection is the transfer of heat in gases & liquids. Convection occurs when a heated fluid moves away from the source of heat and comes in contact with other substances, transferring some of their energy.
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Question 4 of 5
Which pair of objects would repel each other?
O A. A positively charged particle and a neutral particle
OB. A negatively charged particle and a neutral particle
O C. Two positively charged particles
OD. A positively charged particle and a negatively charged particle
Answer:
Two positively charged particles
Explanation:
I said two positively charged particles because if I say c or d what ever it is for you guy it can be wrong so just pick the one that says Two positively charged particles
Answer: C Two positively charged particles.
Explanation:
just trust me on it, i've done the same quiz.
Please help me thank you
Fr+Cl=FeCl3
