Answer:
the answer is protons b
Explanation:
brainliest if 1st one..
Two resistors of resistances 6 Ω and 12 Ω, are connected first in series, and then in parallel in a circuit across a battery of 6 V. Calculate the ratio of the heat produced in the series combination to that of the parallel combination of resistors.
Answer:
0.0136
Explanation:
For the series connection
Effective resistance= 6 + 12= 18 ohm
Current= 6/18=0.33 A
Heat= I^2R= 0.33^2 × 18= 1.96 J
For parrallel
Effective resistance= 6^- 1+12^-1 = 0.167 + 0.083= 0.25 ohm
Current= 6/0.25= 24 A
Heat= 24^2 × 0.25=144J
Ratio of series to parallel= 1.96/144=0.0136
What is meant by the term longitudinal wave?
Answer:
a wave in which the direction of displacement is the same as the direction of propagation, as a sound wave.
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Longitudinal waves are those in which the particles of a medium vibrate to and fro in the direction of propagation of the wave through the medium. Sound wave is an example of longitudinal wave.
[tex] \text{Hope \: I \: helped!}[/tex]
[tex] \text{Have \: a \: wonderful \: time!}[/tex]ツ
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Which skill is least useful on defense in basketball?
A.Jumping ability
B.Speed
C.Strength
D.Passing ability
Which of the following is the first step in the technological design process?
HELP ASAP PLEASE!! due: 11/20/20
A. construct a prototype
B. evaluate the design
C. define a need or problem
D. research existing solutions
Answer:
C
Explanation:
you cannot any other thing if you don't even know what you are designing.
The first step in the technological design process is to define a need or problem, therefore the correct answer is option C.
What are the stages of technological design?There are mainly five stages of technological design,
Identifying the issue that needs to be solved is the first step in every problem-solving process.
The second stage is to imagine; during this phase,
The chosen product from the imaging stage is planned in the third stage.
Testing, evaluating, and modifying the product are the fourth stage.
The sharing of your solution is the fifth step. To gather comments, discuss your ideas with others, and enhance your product,
Technological designing is a lengthy process that involves a number of steps but identifying the problem we are going to is the most important step among all of the steps because a wrong approach to the problem would lead to faulty design in the later stages.
Thus, the first step in the technological design process is to define a need or problem, therefore the correct answer is option C.
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help with this please idk it
Answer:
Explanation:
I think its
c.d and a.a
im so sorry if i get it wrong
Which statement best defines Mechanical Energy?
1.Energy that is produced by an electrical current in a circuit.
2.Energy from the sun
3.The sum of an objects kinetic and potential energy
4.Energy that travels in waves due to vibrations.
Answer:
the sum of an object kinetic and potential energy
A motivated three legged goat accelerates at a rate of -2.67 m/s2 from a velocity of 10.8 m/s to a velocity of 3.7 m/s. How long did it take him?
Initial velocity (u) = 10.8 m/s
Final velocity (v) = 3.7 m/s
Acceleration (a) = -2.67 m/s²
By using equation of motion, we get:
[tex] \bf \longrightarrow v = u + at \\ \\ \rm \longrightarrow 3.7 = 10.8 + ( - 2.67)t \\ \\ \rm \longrightarrow 10.8 - 2.67t = 3.7 \\ \\ \rm \longrightarrow (10.8 - 10.8) - 2.67t = 3.7 - 10.8 \\ \\ \rm \longrightarrow - 2.67t = - 7.1 \\ \\ \rm \longrightarrow \dfrac{ - 2.67}{ - 2.67} t = \dfrac{ - 7.1}{ - 2.67} \\ \\ \rm \longrightarrow t = 2.6 \: s[/tex]
[tex] \therefore [/tex] Time taken (t) = 2.6 s
How many moles of Mg would you need to react with 2.5 moles of O2?
Answer:
2mg+o2--->2mgo
2moles of mg react with one mole of o2 to form 2 moles of mgo
given 2.5moles of o2 hence 5moles of mg will react
Two cars are traveling at the same speed (100 km/hr). They are traveling in opposite directions. Do they have the same velocity? Why?
Explanation:
well its depends for example one car might be going down the hilll and the other up a hill and there the velocity can change between the cars because of gravity so one can be going faster and the other slower.
A 6.2 kg bowling ball that weighs 60.76 N is accelerating at 1.8 m/s2. After 2
seconds, it reaches a speed of 3.6 m/s. What is its momentum at this point?
A. 11.2 kg-m/s
B. 1.7 kg.m/s
C. 22.3 kg-m/s
D. 16.9 kg.m/s
The momentum of the bowling ball at the point where it reaches a speed of 3.6 m/s is 22.3 Kg.m/s (Option C)
How do i determine the momentum?Momentum is defined as the product of mass and velocity. It is represented mathematically as:
Momentum = mass × velocity
Now, we can obtain the momentum of the bowling ball at the point where it reaches a speed of 3.6 m/s. Details below:
Mass of bowling ball = 6.2 KgVelocity of bowling ball = 3.6 m/sMomentum =?Momentum = mass × velocity
Momentum = 6.2 × 3.6
Momentum = 22.3 Kg.m/s
Thus, the momentum at the point is 22.3 Kg.m/s (Option C)
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Which is occurring when work is being done?
Answer:
When work is being done, the practie of labor is being performed. When work isn't being completed, this is a sign of procrastination.
Explanation:
In the answer.
Answer:
D- energy is being transferred
Explanation:
hey someone give me the answers pls
Answer:
B1 and A2
Explanation:
the first one would be B because put 4 into mass times it by the velocity divide it by half because of the radius so the ending result would be 4
number 2 would be A because just input the numbers by the mass, velocity etc.) then any number that needs to be divided for an example radius would have to divide so you divide to get the answer.
Water is used for all of the following in an organism except what?
transporting materials, carrying nutrients to and within cells, carrying waste away from cells, or building bone mass?
Hello there,
Answer: The answer to you're question is B.) carrying nutrients to and within cells.
Explanation: Water's extensive capability to dissolve a variety of molecules has earned it the designation of “universal solvent,” and it is this ability that makes water such an invaluable of life sustaining force. On a biological level, water's role as a solvent helps cells transport and use substances like oxygen or nutrients. Catch this, water helps take the toxins out of your body. Water also helps you from getting sick. Plus, the brain is 90% water. So, drink that water..... :3
Gravitational force acts on all objects in proportion to their masses. Why, then, doesn’t a heavy object fall faster than a light object?
Its becuase weight and mass are different. Even if an object weighs more than another object it might not have more mass than the other object.
Which statement best describes the importance of joints in the roadways of Bridges ?
a. Joints strengthen the roadway to support cars and trucks
b. Joints allow the roadway to expand and
contract with varying outside temperatures
c. Joints allow the roadway to expand and contract as cars put force on the bridge
d. Joints allow the bridge to be built in smaller, easier to assemble pieces.
Answer:
I think the answer is A but I could be wrong but I think the answer is A. please let me know if I am wrong.
Answer:
c. Joints allow the roadway to expand and contract as cars put force on the bridge
Explanation:
Joints in the roadways of bridges allows for the roadway to expand and contract as cars put force on the bridge.
The force on the bridge and the ambient temperature causes expansion of the materials used in making the bridge.
Joints allows and accommodate the expansion. As the force is removed and temperature reduces, the road also contracts.While in the air (neglecting air resistance) the
vertical component of a projectile's acceleration
-remains constant
-increases
-decreases
Anwser
For general projectile motion with no air resistance, the horizontal component of a projectile's velocity ... D. first decreases and then increases ... E. The speed of the object is constant but its velocity is not constant. C ... Neglecting air resistance, when the package hits the ground
Explanation:
*
Which of these answers does not reflect a benefit of being hydrated?
Sleepy
Lubricate Joints
Regulate temperature
Nourish the brain and spinal cord
can anyone plz give me a right answer now?
Answer:
Dy = - 0.0789 [m]
Explanation:
The vertical component of the vector can be determined with the sine of the angle.
Dy = 0.250*sin(18.4)
Dy = 0.0789 [m]
As the y-component is pointing downwards the component is negative.
Dy = - 0.0789 [m]
How could you increase the gravitational potential energy of an object without changing its mass and gravity?
A. Make the object larger
B. Raise the object farther off the ground
C. Lower the object towards the ground
D. Allow the object to roll on the ground
Answer:
B Raise the object farther off the ground
Which action will help you stretch?
A) Bouncing
B) Inhaling and exhaling deeply
C) Eliminating Cardiorespiratory Exercise
D) Holding a pose until it is painful
explain the force of air resistance depends on an objects speed
Answer:
more massive objects fall faster than less massive objects because they are acted upon by a larger force of gravity
Explanation:
need help asap; put you as brainliest
Answer:
unmmmmmmmm I think the answerA
When propoane (C3H8) undergoes combustion, what are the products formed?
Answer:
fire
Explanation:
The combustion of propane (C3H8) formed the products of carbon dioxide and water.
Alkanes are known as saturated straight-chain aliphatic hydrocarbons. They undergo combustion reactions with oxygen. Like other alkanes, Propane exhibits combustion reaction in the same way as other alkanes do.
During combustion reaction, Propane burns in the presence of abundant oxygen to produce water and carbon dioxide. This combustion reaction librates a heat of about 50 MJ/kg.
The equation of the reaction can be shown as:
[tex]\mathbf{C_3H_8 + 5O_2 \to 3CO_2 + 4H_2O}[/tex]
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A 0.30 kg ball is struck by a club with a +900 N force with a contact time of 0.017 s. What is the impulse on the ball?
Answer:
15.3N/s
Explanation:
Given parameters:
Mass of ball = 0.3kg
Force = 900N
Contact time = 0.017s
Unknown:
The impulse on the ball = ?
Solution:
Impulse is the product of force and time of action of the force;
Impulse = force x time
Now insert the parameters and solve;
Impulse = 900 x 0.017 = 15.3N/s
Potential and Kinetic Energy
Pre-Test
Active
1
3
4
TIME REMAINING
58:05
Which statement best compares potential and kinetic energy?
O Objects always have more potential energy than kinetic energy.
Kinetic energy increases and potential energy decreases when the velocity of an object increases.
O Only potential energy decreases when an object's height increases.
O Objects always have more kinetic energy than potential energy.
Answer:
Kinetic energy increases and potential energy decreases when the velocity of an object increases
Compare the speeds of particles in the ice water and air
Answer:
In air the particles are much faster than in the ice water
Explanation:
In ice water it's logically much colder, aso ice is solid, which means the particles can't move freely, otherwise it wouldn't be solid. In the air they can move around freely, because air isn't solid, it's gaseous.
GIVING BRAINLY, FOLLOW, STARS AND POINTS
Which of the following descriptions of these structures is accurate?
a. they are manufactured shell structures
b. they are manufactured mass structures
C. it's a manufactured shell structure
Answer:
Wheres. The. Pics. Of. The. Structures
Explanation:
What will be the velocity of body in horizontal motion of the body in the air?
Answer: Projectiles travel with a parabolic trajectory due to the influence of gravity. There are no horizontal forces acting upon projectiles and thus no horizontal acceleration, The horizontal velocity of a projectile is constant (a never changing in value.
Explanation: I hoped that helped yall !!
A 10 kg box is 1.3 m above the ground. How much potential energy does it have? (g on Earth of 9.8 m/s?
answer =
GPE = mgh
KE = .5mv2
I really need help
what is the reason for the apparent motions of the sun and other stars across the night sky?
Answer:
Answer is A
Explanation:
GOT IT RIGHT ON A P E X :)
The reason for the apparent motions of the sun and other stars across the night sky is the rotation of earth. Hence, option (A) is correct.
What is rotation of earth?The rotation of the planet Earth around its own axis and variations in the orientation of the rotation axis in space are referred to as Earth's rotation or Earth's spin. Earth rotates prograde in an easterly direction. Earth rotates against the direction of the northern polar star Polaris.
The Northern Hemisphere's North Pole, sometimes referred to as the Geographic North Pole or Terrestrial North Pole, is where the Earth's axis of rotation and surface meet. The North Magnetic Pole of the Earth is distinct from this place. The other location where the axis of rotation of Earth crosses the surface is the South Pole, which is located in Antarctica.
The reason for the apparent motions of the sun and other stars across the night sky is the rotation of earth. Hence, option (A) is correct.
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