Answer:
288N
Explanation:
Given parameters:
Mass of Cheetah = 12kg
Acceleration = 24m/s²
Unknown:
Force needed by the cheetah to run = ?
Solution:
The force needed by the Cheetah to run is the net force.
According to Newton's law;
Force = mass x acceleration
Insert the given parameters and solve;
Force = 12 x 24 = 288N
What mass of water can be heated from 25.0° C to 50.0° C by the addition of 2825 J of heat energy if the specific heat capacity of water is 4.184 J/goC?
35 g
13 g
27 g
20 g
Answer:
Mass, m = 27g
Explanation:
Given the following data;
Initial Temperature, T1 = 25°C
Final temperature, T2 = 50°C
Quantity of heat = 2825J
Specific heat capacity of water = 4.184
Heat capacity is given by the formula;
[tex] Q = mcdt[/tex]
Where,
Q represents the heat capacity. m represents the mass of an object. c represents the specific heat capacity of water. dt represents the change in temperature.Making mass, m the subject of formula, we have;
[tex] m = \frac {Q}{cdt} [/tex]
Change in temperature, dt = T2 - T1
Change in temperature, dt = 50-25 = 25°C
Substituting into the equation, we have;
[tex] m = \frac {2825}{4.184 * 25} [/tex]
[tex] m = \frac {2825}{104.6} [/tex]
Mass, m = 27g
Therefore, the mass of water that can be added is 27 grams.
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 skill is least useful on defense in basketball?
A.Jumping ability
B.Speed
C.Strength
D.Passing ability
Okay so, basically my question is about the Careers in the Education & Training Career Cluster and I've seen so many other answers as in Human Resources Management but my answer options are.. Principal, Teacher, Curator, and Writer. Someone please help. (Also my subject isn't Physics, it's FCS ; Family and consumer sciences)
Answer:
ok, I have taken that class my 8th-grade year I might be able to help what is the question tho kinda confused about that?
Explanation:
sorry ?
Answer:
Principal, Teacher, Curator, Writer
Explanation:
The amount of matter in an object is called its weight true or false
Answer:
true
Explanation:
logic
Answer:
false
Explanation:
weight is the force exerted on an object by gravity
what exactly is imprinting?
Answer:
Imprinting is a form of learning in which an animal gains its sense of species identification. Birds do not automatically know what they are when they hatch – they visually imprint on their parents during a critical period of development. After imprinting, they will identify with that species for life.
Explanation:
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
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.
Learn more about earth here:
https://brainly.com/question/12041467
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Which of these answers does not reflect a benefit of being hydrated?
Sleepy
Lubricate Joints
Regulate temperature
Nourish the brain and spinal cord
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.
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
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
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.
To learn more about technological design from here, refer to the link;
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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]
Learn more about combustion here:
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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
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:
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:
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.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:
Why did scientists agree to use one system of measurement?
a) so they could develop theories more easily
b) so they could record their data accurately
c) so they could benefit from using the most accurate measurement system
d) so they could readily interpret one another's measurements
c) so they could benefit from using the most accurate measurement system
Explanation:
yuh
What is the function of the Integumentary System?
Answer:
The skin and accessory structures perform a variety of essential functions, such as protecting the body from invasion by microorganisms, chemicals, and other environmental factors; preventing dehydration; acting as a sensory organ; modulating body temperature and electrolyte balance; and synthesizing vitamin D.
Explanation:
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.
if i want an thrilling job witch should i chose im stuck beetween,
1. horse rider
2. drawer
3. photographer
Answer:
1. horse rider
Explanation:
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.
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.
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~ [tex] \sf{TheAnimeGirl}[/tex]
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
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
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 !!
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.
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
