Answer:
1-3-4-6
Explanation:
not taking the mans answer but just posting it here for people to see it clearly if brushed over on his.
A new Chevy truck comes out on the market. In an advertisement it says that it has a faster engine that Ford’s new truck. If this this statement is true, then it means that both engines do the same amount of ______________________ but different amount of _____________________.
work, power
power, work
not enough information is given
A squirrel starts at rest and accelerates at 2.3 m/s^2 for 5.22 seconds. What is it's final velocity?
Please provide the variable, number, and unit e.g., a= 1.34 m/s^2
Answer:
12.259 m/s
Explanation:
An object starting at rest and accelerating at a constant acceleration a for t seconds has a velocity of
[tex]v=at[/tex]
If we substitute in the values a = 2.3 m/s² and t = 5.22 s, we get a velocity of
[tex]2.3(5.22)=12.259[/tex] m/s
A ball rolls with a speed of 3 m/s across a level table that is 1.5m above the floor. How far along the floor is the landing spot from the table?
Answer:
d = 1.65 m
Explanation:
Given that,
The speed of a ball, v = 3 m/s
A ball rolls a level table that is 1.5 m above the floor.
We can find how long the ball is in free fall. We can use the second equation of kinematics as follows :
[tex]s=ut+\dfrac{1}{2}gt^2[/tex]
u is the initial speed in the vertical direction
So,
[tex]s=\dfrac{1}{2}gt^2\\\\t=\sqrt{\dfrac{2s}{g}} \\\\t=\sqrt{\dfrac{2\times 1.5}{9.8}} \\\\t=0.55\ s[/tex]
Now, using the formula of velocity.
[tex]v=\dfrac{d}{t}\\\\d=vt\\\\d=3\times 0.55\\\\d=1.65\ m[/tex]
So, the landing spot is at 1.65 m from the table.
Which force is an attractive force that is affected by the masses of objects?
A) tension force
B) magnetic force
C) normal force
D) gravitational force
Class: Physical Science B
Answer:
D) gravitational force
An unknown element has been studied in the lab. It has been shown to be malleable, ductile, and a good conductor of heat. Which element best fits this description?
Based on their locations on the periodic table, which two elements would you
expect to form positive ions with a +3 charge?
O A. Nitrogen, N
O B. Aluminum, Al
O C. Phosphorus, P
D. Boron, B
Answer:
i think it would be B. Aluminum, Al and D. Boron, B
Explanation:
since they're both in group 13 and they forms a 3+ ion
Can anyone please help meee!!!
Answer:
The centripetal acceleration is given by
a = v 2 r = 10 2 25 = 4 m s − 2
Using Newton's Second Law, the centripetal force acting is
F = m a = 900 ⋅ 4 =3600 N
Explanation:
What direction does energy transfer to the direction of a light wave
Answer:
light is a transverse wave. The direction of energy transfer is perpendicular to the motion of the wave
Explanation:
Light is an example of a wave that transfers energy through empty space. How are all mechanical waves similar? The waves caused by an earthquake are good examples of energy transfer. The disturbed ground shakes from side to side and up and down as the waves move through it,
What type of cells provide humoral immunity ?
Answer:
Antibody molecules that are secreted by plasma cells mediate the humoral immune response. The antigen that binds to the receptor of the B-cell antigen signals B cells and is internalized and transformed into peptides that activate the armed helper at the same time.
Explanation:
Answer:
B cells
Explanation:
Humoral immunity or humoural immunity is the aspect of immunity that is mediated by macromolecules found in extracellular fluids such as secreted antibodies, complement proteins, and certain antimicrobial peptides. Humoral immunity is named so because it involves substances found in the humors, or body fluids. It contrasts with cell-mediated immunity. Humoral immunity is also referred to as antibody-mediated immunity.
hello I wanna know what is the Newton first is also called the law
Answer:
What is another name for the first law of motion? Why is it given that name? Law of inertia. Page 2. It is given that name because inertia is the tendency of an object to resist any change in its motion until an unbalanced force acts on it.
Explanation:
Which option best describes electromagnetic waves that have enough energy to change atoms or molecules into ions?
A. Waves with low frequency
B. Ionizing radiation
C. Waves with long wavelength
D. Non-ionizing radiation
Answer:
B.Ionizing radiation is the correct answer.
Explanation:
Ionizing radiation has sufficient energy that it can convert atoms and molecules into ions.
It has a sufficient amount of energy that it can separate tightly confined electrons from the orbit of an atom and causing that atom to become ionized.
Answer: lonizing radiation
Explanation:
Got it right
The acceleration due to gravity is 9.81 m/s2, towards the Earth. Rain falling from an altitude of 9,000 m would fall for about 1.5 minutes before hitting the ground (ignoring air resistance). What would be the final speed of a raindrop by the time it reaches the ground?
Answer:
the final speed of the rain is 541 m/s.
Explanation:
Given;
acceleration due to gravity, g = 9.81 m/s²
height of fall of the rain, h = 9,000 m
time of the rain fall, t = 1.5 minutes = 90 s
Determine the initial velocity of the rain, as follows;
[tex]h = ut + \frac{1}{2} gt^2\\\\9000 = 90u + \frac{1}{2} (9.8)(90)^2\\\\9000 = 90u + 39690\\\\90u = -30690\\\\u = \frac{-30690}{90} \\\\u = -341 \ m/s[/tex]
The final speed of the rain is calculated as;
[tex]v^2 = u^2 + 2gh\\\\v^2 = (-341)^2 + 2(9.8\times 9000)\\\\v^2 = 292681\\\\v = \sqrt{292681} \\\\v = 541 \ m/s[/tex]
Therefore, the final speed of the rain is 541 m/s.
Answer:
The magnitude of the final speed of a raindrop by the time it reaches the ground will be 541.45 m/s.
Explanation:
The final speed of the raindrop can be found using the following equation:
[tex] v_{f} = v_{0} - gt [/tex]
Where:
[tex]v_{f}[/tex]: is the final speed =?
[tex]v_{0}[/tex]: is the initial speed
g: is the acceleration due to gravity = 9.81 m/s²
t: is the time = 1.5 min
First, we need to find the initial speed:
[tex] y_{f} = y_{0} + v_{0}t - \frac{1}{2}gt^{2} [/tex]
Where:
[tex]y_{f}[/tex]: is the final height = 0
[tex]y_{0}[/tex]: is the initial height = 9000 m
Hence, the initial speed is:
[tex] v_{0} = \frac{y_{f} - y_{0} + \frac{1}{2}gt^{2}}{t} = \frac{0 - 9000 m + \frac{1}{2}9.81 m/s^{2}*(90 s)^{2}}{90 s} = 341.45 m/s [/tex]
Hence, the final speed is:
[tex] v_{f} = v_{0} - gt = 341.45 m/s - 9.81 m/s^{2}*90 s = -541.45 m/s [/tex]
Therefore, the magnitude of the final speed of a raindrop by the time it reaches the ground will be 541.45 m/s.
I hope it helps you!
What is the definition of endothermic and exothermic?
pls help on a timer will give brainlist
Answer:
An exothermic process releases heat, causing the temperature of the immediate surroundings to rise. While an endothermic process absorbs heat and cools the surroundings
Explanation:
Answer:
Basically, endothermic feels cooler to touch than exothermic.
Explanation:
Endothermic reactions are just reactions that emit energy (in form of heat) to its surroundings. Exothermic ones, on the other hand, draw energy from its surroundings to occur.
Always think - "Endothermic is cool. Exothermic is not cool."
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light
visible light
Answer:
Which part of the electromagnetic spectrum is typically used to make images based on the temperatures of objects?
X-rays
radio waves
infrared light<<<----- CORRECT
visible light
Explanation:
Edge 2021
Infrared light is typically used to make images based on the temperatures of objects.
What is meant by electromagnetic spectrum?The range of all EM radiation arranged from high to low frequency (short to long wavelength) according to their frequency or wavelength. is known as the electromagnetic spectrum (EM).
Here,
Similar to visible light, X-rays are a type of electromagnetic radiation. X-rays have a higher energy than light, on the other hand, and can penetrate most materials, including the human body.
Images of inside body tissues and structures are produced using medical x-rays.
Electromagnetic energy in the infrared region of the spectrum can be seen by them. There is a relationship between an object's temperature and the electromagnetic radiation it releases since infrared radiation is strongly related to object temperature.
Hence,
Infrared light is typically used to make images based on the temperatures of objects.
To learn more about electromagnetic spectrum, click:
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Cell with structures labeled A, B, and C
Cell with structures labeled A, B, and C
What structure represents a chloroplast in the cell?
A construction crane is on top of a skyscraper which has height 45m. The crane itself is 10m in height. What is the gravitational potential energy in joules of a 60kg worker who is standing on top of the crane? (Use g=9.81 in your calculations)
Answer:
32340J
Explanation:
Given parameters
Height of skyscraper = 45m
Height of crane = 10m
Mass of worker = 60kg
g = 9.81m
Unknown:
Gravitational potential energy = ?
Solution:
The gravitational potential energy of a body is the energy due to the position of the body.
It is expressed as:
G.P.E = mgh
m is the mass
g is the acceleration due to gravity
h is the height = 45 + 10 = 55m
G.P.E = 60 x 9.8 x 55 = 32340J
Pls place the words in the right place I'll give brainless and the points!
Explanation:
you measure temperature in degrees celsius using a thermometer. Thermal energy is measured in joules. A larger volume of water will take longer to heat up but will store more energy than the smaller object. However, a smaller object will lose it's heat faster than a larger object. A cup of tea has less thermal energy than a swimming pool.
8.92 x 10 ^ 6 (convert from scientific notation to a standard aka regular number)
A roller coaster, traveling with an initial speed of 23 m/s, decelerates
uniformly at -4 m/s2 to a full stop. How far does the roller coaster travel
during its deceleration?
I NEED STEP BY STEP EXPLANATION
Answer:
5 and 3/4 meters
Explanation:
This is because if it is slowing down by 4 meters and it was moving at 23, then you would figure out how many times 4 can go into 23 and you'd get 5 and 3/4 meters.
A 20 kg bike accelerates at 10 m/s2. What was the force? a.200 Newtons b.20 Newtons c.25 Newtons
Answer:
a.200 Newtons
Explanation:
Given the following data;
Mass = 20kg
Acceleration = 10m/s²
To find the force;
Force is given by the multiplication of mass and acceleration.
Mathematically, Force is;
[tex] F = ma[/tex]
Where;
F represents force.
m represents the mass of an object.
a represents acceleration.
Substituting into the equation, we have
[tex] Force = 20 * 10 [/tex]
Force = 200 Newton.
what is economic development
Answer:
Economic Development is the creation of wealth from which community benefits are realized. It is more than a jobs program, it's an investment in growing your economy and enhancing the prosperity and quality of life for all residents. Economic development means different things to different people.
The athlet at point A runs 150m east, then 70m west and then 100 east
Determine the resultant displacement of the athlete relative to point A
Answer:
180m to the east
Explanation:
Displacement is the distance traveled in a specific direction. It is a vector quantity with both magnitude and direction. Therefore, the start and finish position is very paramount.
point A runs 150m east,
70m west
100m east
150m
--------------------------------------------------------→
70m
←---------------------
100m
-----------------------------------→
The displacement of the athlete = 150 - 80 + 100 = 180m to the east
Which of the following are common forms of energy released by electrons dropping from heightened energy levels?
Answer:
C. Light, Kinetic
Explanation:
The options:
A) Light, Heat
B)Motion, sound
C)Light, Kinetic
D)Heat, Potential
Answer:
A) Light, Heat
Explanation:
Tell me if im wrong!
of the following states of motion, the one which requires balanced forces is:
A: a decrease in speed in a straight line
B: an increase in speed in a straight line
C: constant speed in a straight line
D: a change in the direction of the motion
A balanced force is required for a change in the direction of the motion.
What is a force?According to Newton's second law of motion, the force applied to a body is directly proportional to the product of mass and acceleration of the body.
Balanced forces
Balanced forces are those that are opposite in direction and equal in size. When forces are balanced there is no change in direction.
Thus, when there is change in direction, a balance force can be applied to cancel the change in direction of motion.
Learn more about balanced forces here: https://brainly.com/question/485828
Carmen is helping load furniture and boxes onto a moving truck. She picks up boxes of her things, places them on a cart, and pushes the cart to the moving van. Which term best describes the type of force Carmen is using?
Answer:
friction is the force she is useing
Answer:
helped bring soviets and americans together
positively portrayed American values
showed respect for Russian culture
helped Americans gain a better understanding of the Soviet people during the Cold War
Explanation: edmentum
Some snakes have special sensory organs that detect the infrared region of the electromagnetic spectrum. Compared with human vision, these snakes can sense electromagnetic waves that have
a lower frequency and a shorter wavelength.
a higher frequency and a longer wavelength.
a lower frequency and a longer wavelength.
a higher frequency and a shorter wavelength.
Answer:
A lower frequency and a longer wavelength is correct on edge 2021
please thank the person above me though, they deserve it.
These snakes can sense electromagnetic waves that have a lower frequency and a longer wavelength.
How do snakes detect?With almost ineffective hearing and vision, snakes can be extremely fast animals. Snakes can use chemoreceptors, heat, and even their tails to recognize prey and mates. With mostly ineffective hearing and vision systems, snakes can be extremely fast animals.
They also “see” in infrared. Thanks to the mechanism, they can track prey up to a meter away by the heat of their bodies. They use a simple organ, the loreal pit, located near the nostrils.
See more about snakes at brainly.com/question/412688
A 2.00 kg ball is thrown upward at some unknown angle from the top of a 20.0 m high building. If the initial magnitude of the velocity of the ball is 20.0 m/s. What is the magnitude of the
FINAL VELOCITY when it strikes the ground? (Note: Ignore air resistance.)
Answer: 28.1
Explanation:
The total energy of the ball is the sum of its kinetic and potential energy. It is equal to 792 J. Then, the final velocity of ball when its strikes the ground is 28.1 m/s.
What is kinetic energy?Kinetic energy of an object is the energy gained by its motion whereas, potential energy is stored on the object when the object is at rest.
The total mechanical energy of the ball = Ke + Pe
given, mass of the ball = 2 Kg
height h= 20 m
initial velocity = 20 m/s
Then total energy = 1/2 mv² + mgh = 2 kg [(1/2(20 m/s)² + 9.8 m/s² ×20 m ] = 792 J.
The final velocity Vf = √(2E/m) =√(2×792 J/m)/2 Kg = 28.1 m/s
Therefore, the final velocity of the ball will be 28.1 m/s.
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when talking about Acceleration ,what is significant about the about the sign(+ or -)?
Answer:
Acceleration at its most basic is the act of increasing your running speed. From a standing start (or blocks), you explode into action. If you’re already running, you pick up the pace. Acceleration continues until you can no longer increase your speed, at which point you achieve maximum velocity (top-end speed). Acceleration seems simple enough. The plus means your increasing speed, the k=minus means your decreasing in speed.
Explanation:
The speed of the wooden bar is changed so that the bar hits the water fewer times each second.
What happens to the frequency of the waves produced?
A. Increases
B. Does not change
C. Decreases
Answer:
c - the frequency of the waves decreases
Emily roller skates with a constant speed
of 8 miles per hour. How far can she travel
in 3 hours? D = SxT
Answer:
She can travel 24 miles in 3 hours.