Answer:
25.5
Explanation:
17/2+17
List two functions of blood plasma
Answer:
•Helps to maintain va proper pH in the body which supports cell function.
•Carries electrolytes such as sodium and potassium to our muscles.
a lizard ran 3 meters from his rock to his friend's house. he ran back halfway and stopped. what is his distance traveled
Answer:
4.5m
Explanation:
Distance is the total length of path traveled or covered by a body.
So distance is a scalar quantity, it only has magnitude but no direction.
Therefore:
Total distance = 3 m + [tex]\frac{1}{2}[/tex](3)
So;
3 + 1.5 = 4.5m
Total distance covered 4.5m by the body.
A person walks 60 meters in 1 minute. Then walks 30 meters in 2 minutes. What is thier average speed over the 3 minute walk?
Suppose a 4.0-kg projectile is launched vertically with a speed of 8.0 m/s. What is the maximum height the projectile reaches?
A. 1.7 m
B. 3.3 m
C. 6.5 m
D. 13 m
help as quick as possible plz :(
Answer:
h = 3.3 m (Look at the explanation below, please)
Explanation:
This question has to do with kinetic and potential energy. At the beginning (time of launch), there is no potential energy- we assume it starts from the ground. There, is, however, kinetic energy
Kinetic energy = [tex]\frac{1}{2}[/tex]m[tex]v^{2}[/tex]
Plug in the numbers = [tex]\frac{1}{2}[/tex](4.0)([tex]8^{2}[/tex])
Solve = 2(64) = 128 J
Now, since we know that the mechanical energy of a system always remains constant in the absence of outside forces (there is no outside force here), we can deduce that the kinetic energy at the bottom is equal to the potential energy at the top. Look at the diagram I have attached.
Potential energy = mgh = (4.0)(9.8)(h) = 39.2(h)
Kinetic energy = Potential Energy
128 J = 39.2h
h = 3.26 m
h= 3.3 m (because of significant figures)
Julio was standing at the Om line and ran west to the 50m line in 5s. What
was Julio's velocity?
O 10 m/s east
O 10 m/s west
O 250 m/s east
250 m/s west
The cheetah can run a distance of 275 m for 9 seconds. Calculate its speed.
Answer: 110000
Explanation:
26/9=30.5555555556
30.5555555556 x 60=1833.33333333
110000 x 60=110000
A tornado moving cross a street with a force of 600 N pushes a trailer a distance of 25 m.
How much work was performed in the process?
Answer:
W = 15,000 Joule
Explanation:
Mechanical Work
Mechanical work is the amount of energy transferred by a force. It's a scalar quantity, with SI units of joules.
If both the force and displacement are parallel, then we can use the scalar formula:
W=F.s
Where
F =Magnitude of the force
s = magnitude of the displacement
The tornado moved a trailer with a force of F=600 N for a distance of s=25 m. The work done was:
W = 600 N * 25 m
W = 15,000 Joule
A pendulum bob swings along its characteristic arc as shown. Rank the gravitational potential energy of the pendulum bob at the three marked locations
Answer:
Gravitational potential energy is the maximum at point C and lowest at point A
Explanation:
The image for the question is provide in the attached file
The energy of pendulum is governed by mechanical energy. Mechanical energy is the sum of potential energy and kinetic energy
Potential energy increases with increasing height. Thus, when the pendulum bob is at maximum height, then its potential energy is also the highest.
Thus, At point C, the gravitational potential energy is the highest
At point A, the gravitational potential energy is substantial but lower than that of gravitational potential energy at point C
AT point A, gravitational energy is the lowest
According to the label, what is the estimated cost of running this air conditioner for 3,000hours if electrical energy costs 10 cents per kilowatt-hour?
a.$40
b.$19
8c.$238
d.$300
The electromagnetic spectrum has waves of varying levels of energy. Which
wave has the least energy?
Answer:
Radio waves, I believe
Explanation:
Answer:
radio yes yup yup yup yup
which two options are examples of wave refracting?
A. Your image in a mirror
B. Light bending as it travels through glass.
C. A voice echo.
D. An object appearing broken when partly seen through water.
For an ideal gas, the change in internal energy AU is zero during an
A. isobaric process
B. isochoric process
C. isothermal process
D. adiabatic process
Calculate the resistance of an electric blanket that draws 9 A to transform 50 W of energy.
Answer:
The resistance is 0.617Ω.
Explanation:
Given that the formulas are V = I × R and P = I × V so when you substitute the V formula into P formula, you will get P = I² × R. Using this formula, you can find the resistance :
P = I² × R
50 = 9² × R
50 = 81 R
50 ÷ 81 = R
R = 0.617Ω (3sf)
1. How much thermal energy does a 2kg steel block
(c=450J/kg°C) lose when it cools from 300°C to 20°C?
please help me and show the working out.
What does the speed of air have to do with air pressure?
Detailed answer pls!!! i will give brainliest!!!!
Answer:
The air speeds up, and as it speeds up, its pressure—the force of the air pressing against the side of the object—goes down. ... This means that if the area in which the air is moving narrows or widens, then the air has to speed up or slow down to maintain a constant amount of air moving through the area.
Please give brainliest!!!!
List these things in order of size, starting with the smallest thing:
Universe, Earth, Galaxy, Moon, Solar System, Sun
The particles of a substance can have kinetic energy (KE) and potential energy (PE). Which equation best summarizes the internal energy (U) of the substance?
Answer:
The internal energy of a substance is equal to the total amount of potential energy and kinetic energy of ALL the particles in the substance.
For example, when the temperature increases (more temperature means more energy), the kinetic energy of the particles in the substance increases.
And when we reach a point near a change of phase (like near fusion point) there is energy used to break the bonds between the particles, then we have an increase in potential energy.
Then we could write the internal energy as:
U = ∑(KEₙ) + ∑(PEₙ)
Where ∑(KEₙ) and ∑(PEₙ) are the sums of the kinetic energy and potential energy of all the particles in the substance.
The equation that best summarizes the internal energy (U) of a substance that has both kinetic and potential energy is U = ∑(KEₙ) + ∑(PEₙ).
WHAT IS INTERNAL ENERGY:The internal energy of a substance is equal to the total amount of potential energy and kinetic energy of all the particles in the substance.According to this question, the particles of a substance can have kinetic energy (KE) and potential energy (PE). This means that the internal energy is the sum of the kinetic energy and potential energy of all the particles in the substance.Therefore, equation that best summarizes the internal energy (U) of a substance that has both kinetic and potential energy is U = ∑(KEₙ) + ∑(PEₙ).
Learn more about internal energy at: https://brainly.com/question/11278589
I WILL GIVE BRAINLIEST
How could you explain that two objects of the same volume have different buoyancy in water???
HELP ITS URGENT
Answer:
Explanation:
Take for example you place two eggs in the water. One starts to sink and one remains floating. They have the same volume but the one that sinks is cracked just a little, which as soon as it hits the water, water starts to go in the egg. Then that changes the volume of the egg. (I've done this expirement before) It can also be the way you place the object in the water, or one object has been in the water longer. The buoyancy can be the way they are positioned/placed in the water. One may be more absorbant to the water as well.
I hope you understand what I am trying to say.
What are two ways in which ultrasound technology produces images
Why we need football?
Answer:
bc we play when we are bored and some people use it as a tradition to play on thanksgiving
Mass is 56.8 g and the volume is 10 mL what is the density
Can some help me please im confused ♀️ !!! I,ll give you BRAINLIES
Answer:
2 seconds
Explanation:
Which picture is louder?
A) Bottom picture with greater amplitude
B) Top picture with less amplitude
Help me plssss!!!
Answer:
A
Explanation:
The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound.
(Physics) Help !! I’ll give brainliest if you answer both the question in the picture and this question :
The loudness or intensity of a sound is related to its…
A. Amplitude
B. Frequency
C. Pitch
D. Wavelength
Answer:
Explanation:
i think the first questions answer is A. amplitude
the second questions answer is also A. transverse wave
Answer:
B. Frequency and transverse
3.5 x 10^-3 as a regular number (convert from scientific notation to a real number)
Answer: 0.0035
============================================
Explanation:
The exponent is -3, so we move the decimal point 3 spots to the left to go from 3.5 to 0.0035
If the exponent was positive, then we would move the decimal point to the right that amount of spaces.
HELP PLS MARKING BRANLIST 100 Pts TAKING TEST RN
A shopping cart is going 2.0 m/s and comes to a complete stop after 4 seconds. What was the cart's acceleration?
8 m/s2
-0.5 m/s2
0.5 m/s2
-8 m/s2
Answer:
0.5 m/s2
Explanation:
accelration formula : final velocty - starting velocity divided by time
A .5kg book sits on top of a student's desk which is 9m high. How
much gravitational potential energy does the book have as it sits on the desk?
Answer:
441J
Explanation:
Given parameters:
Mass of book = 5kg
Height = 9m
Unknown:
Gravitational potential energy = ?
Solution:
The gravitational potential energy of a body is the energy due to the position of the body.
It is given as:
Gravitational potential energy = mass x acceleration due to gravity x height
Gravitational potential energy = 5 x 9.8 x 9 = 441J
Can somebody please work these questions out for me?.
Answer:
Please find the calculated values entered into the following table;
[tex]\left\begin{array}{ccccc}Object & Mass \ (kg)& Weight \ (N) & Height \ (m)&G.P.E.\\A&5&50&2&100\\B&2&20&6&120\\C&8&80&5&400\\D&20&200&0.6&120\\E&5,000&50,000&2&100,000\\F&0.2&2&10&20\\G&67&670&44&29,480\end{array}[/tex]
Explanation:
The given parameters are;
The acceleration due to gravity, g ≈ 10 N/kg
The Gravitational Potential Energy, G.P.E. = m × g × h
The weight of the object, W = m × g
∴ G.P.E. = W × h
The table is filled using the above formula for calculations as follows;
For object A, we have;
Weight = 5 kg × 10 N/kg = 50 N
G.P.E. = 50 N × 2 m = 100 J
For object B, we have;
Weight = 2 kg × 10 N/kg = 20 N
G.P.E. = 20 N × 6 m = 120 J
For object C, we have;
Weight = 8 kg × 10 N/kg = 80N
G.P.E. = 80 N × 5 m = 400 J
For object D, we have;
Weight = 20 kg × 10 N/kg = 200 N
G.P.E. = 200 N × 0.6 m = 120 J
For object E, we have;
Weight = 5,000 kg × 10 N/kg = 50,000 N
G.P.E. = 50,000N × 2 m = 100,000 J
For object F, we have;
Weight = 0.2 kg × 10 N/kg = 2 N
G.P.E. = 2 N × 10 m = 20 J
For object G, we have;
Weight = 67 kg × 10 N/kg = 670 N
G.P.E. = 670 N × 44 m = 29,480 J
Therefore, we have the table filled as follows;
[tex]\left\begin{array}{ccccc}Object & Mass \ (kg)& Weight \ (N) & Height \ (m)&G.P.E.\\A&5&50&2&100\\B&2&20&6&120\\C&8&80&5&400\\D&20&200&0.6&120\\E&5,000&50,000&2&100,000\\F&0.2&2&10&20\\G&67&670&44&29,480\end{array}[/tex]
is newton third law accurate for electric forces?
An object with greater charge will exert a greater force on an object than an object with smaller charge would. However, if you consider two charges that exert a force on each other, regardless of the magnitude of charge, both charges will exert an equal force on each other because of Newton's third law.
Andy has set a goal to be able to run 65 laps on the PACER by the end of the school year. This is an example of a ____.
1. short-term goal
2. improvement plan
3. long-term goal
4. none of the above
Answer:
The answer is long- term goal
Explanation: