Answer:
133.33J/kg°C
Explanation:
Given parameters:
Mass = 5kg
Temperature change = 3°C
Thermal energy = 2000J
Unknown:
Specific heat of the block = ?
Solution:
To find the specific heat capacity, use the formula below;
H = mCФ
where H is amount of heat
m is the mass
C is the specific heat capacity
Ф is the temperature change
Input the parameters and solve;
2000 = 5 x C x 3
C = [tex]\frac{2000}{15}[/tex]
C = 133.33J/kg°C
how much time will it take to do 33j of work with 11 w of power
Time required : 3 s
Further explanationPower is the work done/second.
[tex]\tt P=\dfrac{W}{t}\\\\P=power,j/s,watt\\\\W=work, J\\\\t=times=s[/tex]
To do 33 J of work with 11 W of power
P = 11 W
W = 33 J
[tex]\tt t=\dfrac{W}{P}\\\\t=\dfrac{33}{11}\\\\t=\boxed{\bold{3~s}}[/tex]
Digging downward through a soil profile, how deep would you have to go before you found recognizable fragments of the parent rock for the soil?
What is similarity?
Answer:
same things
Explanation:
How plants are in the
Solora System
Answer:
there was 9 but pluto got kicked out of the solar System so 8
The gland which is like a medium for the passage of the sperms is known as
Answer:
seminal glands or vesicular glands
what definition of a compresssion is correct?
A. region of high altitude in a medium caused by a passing wave
B. region of high pressure in a medium caused by a passing wave.
C. region of low pressure in a medium caused by a passing wave.
D. region of zero pressure in a medium caused by a passing wave
Answer:
B
Explanation:
Compression is the region of high pressure in a medium caused by a pressure wave.
What is Compression?When a physical force presses inward on an object, causing it to become compacted, that is when compression force (also known as compressive force) happens. The atoms and molecules of the item move around in relation to one another throughout this process. Depending on the kind of material receiving the compressive stress, this change may be either temporary or permanent. Depending on the direction or location of the compressive force imparted to the object, other outcomes may also ensue.According to Newton's Third Law of Motion, there is an equal and opposite reaction force for every action force. Both ends of an object that is lying on a surface are subjected to the same amount of compression force.The physical shape of the spring gets compacted as compression force is applied to it. The spring immediately extends outward and returns to its original shape when the compression is released. This can be a dynamic reaction, depending on the amount of force used and the spring's own malleability.To learn more about compression, refer to https://brainly.com/question/7602497
#SPJ2
When the light turns green, Mark accelerates straight down the road at 1.8 m/s2 for 8 seconds. What is his final velocity at the end of those 8 seconds?
Answer:
14.4m/s
Explanation:
To calculate the final velocity (V), we use the formula:
v = u + at
Where; v = final velocity (m/s)
u = initial velocity (m/s)
a = acceleration (m/s²)
t = time (s)
According to the provided information in this question, v = ?, u = 0m/s, a = 1.8m/s², t = 8s
Hence, v = u + at
v = 0 + (1.8 × 8)
v = 0 + 14.4
v = 14.4m/s
Therefore, his final velocity at the end of those 8 seconds is 14.4m/s.
The mining-resource cycle determines the use of ore materials. Which step is not part of the cycle?
A)
exploring and extracting ores
B)
refining ores and creating products from ore materials
C)
marketing and selling products that use ore materials
D)
recycling and disposing of wastes from the steps and the products
Answer:
c) marketing and selling products that use ore materials
You are given directions to a friend’s house from your school. They read: “Go east one block, turn north and go 4 blocks, turn west and go 1 block, then go south for 2 blocks.” Using your school as the origin, draw a map of these directions on a coordinate plane. What are the coordinates of your friend’s house?
Answer:(0,2)
Explanation:
Take origin (0,0) as point A and when you move one block east to point B then coordinates becomes (1,0)
Now you move 4 blocks north to point C then the coordinates of point C becomes (4,1)
Similarly, You move 1 block west to point D such that its co-ordinates becomes (0,4)
Finally you move from D to E, 2 blocks south such that point E becomes (0,2)
So, E is the friend's house and its coordinates are (0,2)
It can be diagramatically be represented by figure given below
A ball initially at rest is dropped from a window 24.3 m off the ground. How long does it take for the ball to reach the ground?
Answer:
The ball takes 2.23 seconds to reach the ground
Explanation:
Free Fall Motion
A free-falling object falls under the influence of gravity only. An object being acted upon only by the force of gravity is said to be in a state of free fall. Free-falling objects do not have air resistance.
If an object is dropped from rest in a free-falling motion, it falls with a constant acceleration called the acceleration of gravity, which value is [tex]g = 9.8 m/s^2[/tex].
The distance traveled by a dropped object is:
[tex]\displaystyle y=\frac{gt^2}{2}[/tex]
Knowing the height h from which the object was dropped, we can find the time it takes fo hit the ground:
[tex]\displaystyle t=\sqrt{\frac{2h}{g}}[/tex]
Since y=24.3 m:
[tex]\displaystyle t=\sqrt{\frac{2\cdot 24.3}{9.8}}[/tex]
t=2.23 seconds
The ball takes 2.23 seconds to reach the ground
Which of the following information about motion can be determined by looking at a position vs. time graph that is a straight line?
a.frame of reference
b.average acceleration
c.velocity
d.direction of force applied
Answer:
Velocity
Explanation:
If the position-time graph of the motion of an object is a straight line, it would mean that the object is moving uniformly. The velocity or the slope of the object is constant in such case. If the slope is curved line, it means that the velocity is not constant.
Hence, the correct option is (c).
A penny dropped into a wishing well reaches the bottom in 2.50 seconds. What was the velocity at impact?
Answer:
Taking it was dropped with inital velocity of 0m/s.
v = u+at
v = 0 + 9.8*1.5
v = 14.7s
(a=9.8m/s^2 << That's the acceleration due to gravity)
Explanation:
PLEASE HELP!! ILL MARK BRAINLYEST!!!
A chemical change occurs when a substance changes phase.
True
False
Answer:
False
Explanation:
Is it true to say there are forces acting on an object that is traveling at 20 m/s in a
straight line?
Answer:
Its true i think
Explanation:
Choose a sport you like, such as football or gymnastics. Describe how a high level of flexibility would affect your performance in that sport. Consider the benefits in many aspects of the sport.
The level of flexibility will affect my performances in football. Football
requires some level of flexibility to do certain things.
Flexibility will enable me change speed and direction easily when there is a
counter attack by the opponents. It will also assist in using some techniques
such as adding more curve on the football with the feet in order to score
goals.
Flexibility will also ensure that there will be lesser injury concerns because there will be less sprains or other muscle related injuries.
Read more on https://brainly.com/question/18472626
If a football player has a weight of 600 N on earth, what would his weight be on the moon?
Answer:
99n
Explanation:
Earth’s gravitational force
(1 Point)
Is the same strength, no matter where you are on Earth.
Does not affect objects orbiting the Earth.
Fluctuates or changes depending on your location on Earth.
Changes the mass of an object.
a car travels 200m in 30 s and 400m in the next 90s. Whats the average speed?
Answer:
300m per minute or 5m per second
How to do p=hdg
I don’t understand it all please help
A 0.660 kg ball is dropped from rest from the top of a building and falls for 5.65 seconds. How tall was the building ?
Answer:
The height of the building is approximately 156.58 m
Explanation:
The mass of the ball dropped from rest from the building top = 0.660 kg
The time in which the ball falls, t = 5.65 seconds
The height, h, of the building is given from the following equation of motion;
h = u·t + ¹/₂·g·t²
Where;
u = The initial velocity of the ball = 0 m/s
g = The acceleration due to gravity = 9.81 m/s²
Plugging in the values, we have;
h = 0 × 5.65 + ¹/₂ × 9.81 × 5.65² ≈ 156.58 m
The height of the building, h ≈ 156.58 m.
how do initial velocity and final velocity differ
Zinc can not be changed into a simpler substance by a chemical or physical process. Therefore, zinc is classified as:
a gas.
a molecule
an element.
a compound.
I'm pretty sure its compound
(02.04 LC) Which statement best describes the rate of dissolving? (2 points) Group of answer choices All substances dissolve at the same rate. All substances dissolve at a fast rate. The rate of dissolving may be fast or slow. Rates of dissolving are usually slow.
Answer:
C. The rate of dissolving may be fast or slow.
Explanation:
When a solute is added to a solvent, the rate of dissolving may be fast or slow. This is determined by the temperature of the solvent.
A high temperature of solvent can cause an increase in the rate of dissolving a solute or substance in it, while a low temperature of solvent causes a decrease in the rate of dissolving a solute or substance in a solvent.
Therefore, the rate of dissolving may be fast or slow.
HELP what is the answer to this question?
Answer:
b
Explanation:
Sorry if it’s blurry. Please help. I can’t mess up.
answer:
MAXIMUM SPEED
explanation:
IM SURE THAT IS THE ANSWER
you throw a snowball horizontally. it hits a target 2 meters away. you notice that it hit .9 m below were u aimed. with what horizontal velocoty did you throw the ball
Answer:
The target is 2 meters ahead of you.
If you throw the snowball with a velocity S, then the time that the snowball will need to hit the target is:
2m/S = T
Now let's analyze the vertical problem.
The only force acting on the snowball is the gravitational force, then the acceleration will be -g = -9.8m/s^2.
a(t) = -9.8m/s^2
For the vertical velocity, we need to integrate over time and get:
v(t) = (-9.8m/s^2)*t + v0
Where v0 is the initial vertical velocity, in this case is zero because the ball is thrown horizontally.
v(t) = (-9.8m/s^2)*t
For the vertical position, we integrate again over time.
p(t) = (-4.9m/s^2)*t^2 + p0.
Now, we know that when the ball hit the target, it hits 9 meters below the desired point (where the desired point is p0), so p(2m/S) = p0 - 9m.
Then we have:
(-4.9m/s^2)*(2m/S)^2 = -9m.
We need to solve this for S.
(-4.9m/s^2)*4m^2/-9m = S^2
2.178 m^2/s^2 = S^2
√(2.178 m^2/s^2) = S = 1.48 m/s
The horizontal velocity is 1.48 m/s
Arrange the following events in the mantle convection process. Use numbers 1-5.
a. Lithospheric plates move in the asthenosphere due to rising and sinking of
materials.
b. The decomposition of radioactive elements causes heat in the interior part of
the Earth
c. Heat slowly rises to the mantle and creates convection current.
d. Heat moves to the core.
e. The process repeats as cycle.
Answer:
1) Lithospheric plates move in the asthenosphere due to rising and sinking of materials is 1.
2) The decomposition of radioactive elements causes heat in the interior part of the Earth
3) Heat slowly rises to the mantle and creates convection current.
4). Heat moves to the core
5) The process repeats as cycle.
Explanation:
Mantle convection is the gradual slow creeping of movement of the Earth's mantle which is as a result of convection current which transfer heat from the interior to the surface of the Earth .
The process of mantle convection start with
1. Lithospheric plates move in the asthenosphere due to rising and sinking of materials is and thus form the two component of the mantle.
2) The decomposition of radioactive elements causes heat in the interior part of the Earth. This is as a result of accretion which is associated to sea flooding
3) Heat slowly rises to the mantle and creates convection current.
4). Heat moves to the core, cools down by conduction and convection of heat.
5) The process repeats as cycle.
The proper and correct arrangement of events in the mantle convection process are:
1. The decomposition of radioactive elements causes heat in the interior part of the Earth.
2. Heat moves to the core
3. Heat slowly rises to the mantle and creates convection current.
4. Lithospheric plates move in the asthenosphere due to rising and sinking of materials.
5. The process repeats as a cycle.
Convection is considered to be one of the most efficient ways through which heat is transported from the interior of planet Earth to the surface.
Mantle convection can be defined as the very slow transfer of heat due to the movement of Earth's solid silicate material within the mantle.
Basically, the slow creeping of the mantle causes a transfer of heat from the white-hot core to the brittle lithosphere during mantle convection.
Furthermore, the heating of the mantle takes place from below (the core) and it rises upward in hotter regions while it sinks down in colder regions.
The proper and correct arrangement of events in the mantle convection process are:
1. Heat is caused in the interior part of the Earth due to the decomposition or decay of radioactive elements.
2. Heat moves to the core.
3. Heat slowly rises from the Earth's core to the mantle and creates convection current in the asthenosphere, which is the plastic layer of the mantle.
4. Lithospheric plates move in the asthenosphere due to rising and sinking of materials.
5. The process is then repeated as a cycle.
Read more: https://brainly.com/question/19545005
What does Newton's third law describe?
A. Equal and opposite forces
B. How the amount of mass influences the amount of force needed
to move an object
C. The tendency of moving objects to stay in motion
D. The attractive force between two objects due to their masses
At which point(s) does the ball have 25% potential energy and 75% kinetic energy?*
Answer:
hey
Explanation:
hey
Momentum is usually not exactly conserved in a real world demonstration of momentum conservation. What is a possible reason for this fact?
Answer:
For any collision occurring in an isolated system, momentum is conserved. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.
Explanation:
Hope this helps