Answer:
Amorphous solids are composed of atoms or molecules that are in no particular order. Each particle is in a particular spot, but the particles are in no organized pattern. Examples include rubber and wax. Crystalline solids have a very orderly, three-dimensional arrangement of atoms or molecules
Explanation:
10)A car is moving from rest and attained a velocity of 80 m/s. Calculate the
acceleration of the car after 5 s?
Answer:
initial velocity (u)=0
final velocity (v)=80m/s
time(t)=5s
acceleration (a)=?
Explanation:
we have
v=u+at
80=0+a×5
5a=80
a=80/5=16m/s²
A picture hangs evenly from two wires of equal length. The wires each make an angle of 45 degrees with the ceiling. If the mass of the picture is 6 kg, what is the tension force on each wire? Report your answer to 3 decimal places. Do not include the units in your answer or the computer will mark the problem wrong.
Answer:
41.578N
Explanation:
A car has a mass of 1000 kg and a momentum of 12 000 kg m / s.
What is its kinetic energy?
Answer:
It's 7.2 x 10^10
I got that because I've put that into the calculator
but just transform it into a standard form = 72000000000
How does convection create wind patterns at a beach? A. The Sun heats the water and the land equally during the day, but at night heat from the land rises, causing warm air over the water to rush toward shore. B. Electromagnetic waves from the Sun are absorbed in Earth's atmosphere, which is warmed and then reemits the heat as electromagnetic waves. C. Increasing temperature means greater kinetic energy, and the kinetic energy shows itself as movement of the air molecules. D. During the day, air over the warm land heats up and rises, while cooler air that was over the water is drawn in to shore to replace it. SUBMIT
Answer:
D. During the day, air over the warm land heats up and rises, while cooler air that was over the water is drawn in to shore to replace it.
Explanation:
Convection creates wind patterns at a beach by the force of land and sea breeze which are different wind patterns that move air masses.
Convection is a form of heat transfer that occur mainly in fluids such as gases and in liquids.
During the day, the air over the land is warmed. The land is a good conductor heat better than the ocean. This air masses rises and move towards the ocean. The colder air from the ocean moves landward to replace this air mass.
As the cold air gets warmer at land, it rises and move ocean-ward again.
13. Explain whether the following answers are reasonable or not. Check the magnitude, the units, and the
direction. You DO NOT have to solve the problems yourself.
a) A car speeds up as it enters the freeway. It accelerates at 5.4 m/s? What was the car's final speed?
ANSWER: 6.3 m/s forward
I
Because the electrons in a molecule of hydrogen fluoride (HF) are more strongly pulled toward the fluorine atom, the molecule is nonpolar.
Please select the best answer from the choices provided
T
F
Answer:
false
Explanation:
this makes the molecule very polar
xf - (40cm) = (1.0 m/s) (1.8 s) + 1/2 (2.2 m/s^2) (1.8 s)^2
Answer:
easy stuff
Explanation:
Help!!! i'll mark brainliest
If I stretch a standard rubber band (mass of 0.01 kg, spring constant of 40 N/m) 0.25 meters, how high would it launch into the air?
Answer:
You have a hooks law problem F=kx Where F= (40 N/m)× (0.25 meters) F= 10 N Hence the force is 10 NAnswer: The answer would be 12.5 m
The model above shows sunlight that is directly hitting one side of the earth during its winter season. Which sentence explains why this area is experiencing shorter hours of daylight
Answer:
During winter time the northern hemisphere leans away from the sun due to the rotation of earth and due to this change the sunlight is not direct on these areas instead it is spread and due to this the shadows are longer and the sunlight is not intense. The earths rotation around the sun causes the seasons to change and that is why we experience shorter hours of daytime.
Explanation:
During winter time the northern hemisphere leans away from the sun due to the rotation of earth and due to this change the sunlight is not direct on these areas instead it is spread and due to this the shadows are longer and the sunlight is not intense. The earths rotation around the sun causes the seasons to change and that is why we experience shorter hours of daytime.
4. Which problem is most likely to result from the use of nuclear power?
O A. storage of radioactive wastes
B. miners getting trapped underground
C. oil spills that pollute oceans and beaches
O D. pollutants in the groundwater after drilling
Answer:
i think it is A
Explanation
Which object has the most thermal energy?
Answer:
B
Explanation:
The object with the most thermal energy is the choice B. This is because from the given choices, it has the most mass and highest temperature of all the bricks.
Thermal energy is the sum total of the average kinetic energy within the system.
It is mathematically expressed as:
Quantity of energy = mass x specific heat x change in temperature
We see that the quantity of the thermal energy is directly proportional to mass and temperature changes.
Answer:
B. a 4 kg brick at 25 degrees Celsius
Explanation:
did the quiz <3
What type of energy is due to motion potential energy or kinetic energy
Answer:
Kinetic Energy
Explanation:
Potential Energy is where something is building up energy to move.
Answer:
Kinetic Energy
Explanation:
A piece of ice absorbs heat and melts. Which statement best describes the
changes in the ice as it melts?
A. The potential energy of the particles increases as intermolecular
forces are overcome.
B. The potential energy of the particles increases as the temperature
increases.
C. The kinetic energy of the particles increases as the temperature
increases.
D. The kinetic energy of the particles increases as intermolecular
forces are overcome.
Answer:
a
Explanation:
a p ex
The potential energy of the particles increases as intermolecular forces are overcome.
When a substance such as ice melts, its temperature increases. Water molecules become less orderly and they spread apart.
What is potential energy ?"Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors." An object can store energy as the result of its position. For example, the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly, a drawn bow is able to store energy as the result of its position.
Know more about potential energy here
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how much time would it take for the sound of thunder to travels at a speed of 330m/seconds
A car is traveling in a race. The car went from the initial velocity of 35 m/s to the final velocity of 65 m/s in 5 seconds. What is the acceleration? 0-13 m/s2 0-6 m/s2 0.6 m/s2 O 13 m/s2
Answer:
6m/s²
Explanation:
Given parameters:
Initial velocity = 35m/s
Final velocity = 65m/s
Time taken = 5s
Unknown:
Acceleration = ?
Solution:
Acceleration is the rate of change of velocity with time taken;
Acceleration = [tex]\frac{Final velocity - Initial velocity }{time}[/tex]
So;
Acceleration = [tex]\frac{65 - 35}{5}[/tex] = 6m/s²
Do you think cell division stops after a new baby is born? Why or why not?
Answer:
No.
Explanation:
The method of cell division, the transformation of the baby into an adult in itself is accomplished. Until your death, cell division continues. The formation of new white blood cells to replace the killed ones after a cut and the development of skin to replace the skin that has been cut are some examples of cell division.
calculate the heat of television if:
light-119J
Sound-1J
electricity-200J
heat-?
quickly pls
Answer:
002 bc eause iy is