Answer:
B
Explanation:
If Angelina waited until the next day to observe and record how long the ice cube took to melt she wouldn't be able to know how long the ice cube took to melt because she wasn't there while the ice cube was melting.
How do people participate in tourism
Fatima is watching her pet cat, Winter, napping in the sun. Fatima is curious about the heart rate of Winter when she is napping, so she develops this scientific question: Does a cat’s heart rate change while it is napping
We have that for the question, Does a cat’s heart rate change while it is napping?
Cats heart rate do not increase while napping.
The range of heart beat of a cat is 140 and 220 bpm
From the Question we are asked
Does a cat’s heart rate change while it is napping.
The answer is NO
Cats heart rate do not increase while napping. Cat have a normal heart beat maximum of 220 beats per minute consistently.The range of heart beat of a cat is 140 and 220 bpm
Therefore
There is something with a cat with heart rate above this number.
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True or false: it would take 100 years on a space shuttle to reach the closest galaxy
What does the k in kW stand for
kW=kilowatt
k=kiloW=Watt[tex]\boxed{\sf 1kW=1000W}[/tex]
Or.
[tex]\\ \sf\longmapsto 1kilowatt=1000watts[/tex]
Which is most likely the length of a student’s textbook?
30 millimeters
30 centimeters
30 decimeters
30 hectometers
A diagram shows how gravity on Earth works on an object located in different spots in a seaside community. Where is gravity between Earth and an object the strongest?
A when the object is on the highest branch of a pine tree
B when an object is at sea level
C when the object is on top of a nearby mountain
D when the object is on top of a telephone pole
Answer:
B) when an object is at sea level
Explanation:
Answer:
When the object is at sea level
Explanation:
One equation that describes motion of an object is
x = vt + xo, where x is the position of the object, v is
its speed, t is time, and xo is the initial position. Show
that the dimensions in the equation are consistent.
We have that the resultant equation is L=L we can say that the dimensions in the equation are consistent
From the Question we are given equation
[tex]x = vt + xo[/tex]
Generally
x = distance in meters(m)
v =velocity in m/s
t=time in secs
x_0=distance in meters(m)
Therefore
The Dimension of equation is
[tex]L=LT^{-1}*T+L\\\\L=L[/tex]
Hence, Given that the resultant equation is L=L we can say that the dimensions in the equation are consistent
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A basket contains 7 white cats and 15 black cats. What is the ratio of the number of white cats to the number of black cats?
1.) What is the key difference between mass and weight?
A )Mass is measured in Newtons
B )Weight is measured in grams or kilograms
C ) Weight is equal to mass x gravity
2.) In terms of particles, what is the difference between a liquid and a solid?
A) a liquid has more thermal energy than a solid
B) a solid has more thermal energy than a liquid
C) Both solids and liquids have the same amount of thermal energy
3.) A mixture is...
A) a pure substance
B) at least two substances chemically combined
C) at least two substances physically combined
4.)In terms of particles, what is the difference between a liquid and a solid?
A) a liquid has more thermal energy than a solid
B) a solid has more thermal energy than a liquid
C) both solids and liquids have the same amount of thermal energy
Answer: C, A, C, A
Explanation:
I apologize if incorrect. I answered these to the best of my abilities, please feel free to let me know if they were correct or incorrect.
Which is most likely the length of a student’s textbook?
30 millimeters
30 centimeters
30 decimeters
30 hectometer
When sound waves are reflected back to the source, the reflected sound is called
What is time dilation? Is that a thing only in the movies? I need a good explanation that is simple enough for me
A bus traveling at 30 m/s accelerates at a constant rate of 2.4 m/s2 over a distance of 60 m.
What is its speed after accelerating?
Answer:
Speed is 34.5 m/s
Explanation:
From the third equation of motion:
[tex]{ \boxed{ \sf{v {}^{2} = {u}^{2} + 2as}}}[/tex]
v is final velocity, u is initial velocity, a is acceleration, s is displacement.
substitute:
[tex] {v}^{2} = {30}^{2} + (2 \times 2.4 \times 60) \\ {v}^{2} = 900 + 288 \\ {v} {}^{2} = 1188 \\ {v} = \sqrt{1188} \\ v = 34.5 \: m {s}^{ - 1} [/tex]
Show the relationship between linear expansivity and superficial expansivity
a washing machine of 46 ohm draws a current of 5A. Determine the power rating of the washing machine
Explanation:
P = V .I
from ohms law
V = I.R
P = I^2 .R
= 25 × 46 =1150 watt
1.How many significant digits are in 101,407,063?
Answer:
There are 9 significant digits in 101,407,063.
Explanation:
Significant figures are the digits of a number that are meaningful in terms of accuracy. The include any non-zero digit, zeros between non-zero digits, and trailing zeros only when there is a decimal point.
if you have 6,000 milligrams of rick to move how many grams is that?
Answer:
0.006kg
Explanation:
bdjdndjoskdn dhend
find the difference between infectious agents and diseases
Answer:
A disease is a disorder in the function of the human body where as infectious agents are organisms that cause diseases
1. A body has a velocity of 72 km/hr. Find its value in m/s.
72 Km/hr
= 72000 m/ 60×60 s
= 72000 m/ 3600 s
= 20 m/s
Answer is 20 m/s.
Hope it helps! Please do comment
How much work is done by the force of gravity when the book is released?
Answer:
please see picture
Explanation:
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Part G
Based on your observation of the Tracker videos and the calculations of average vertical velocity and acceleration,
• Why do you think the vertical acceleration values are not equal to the theoretical acceleration due to gravity, -9.81 meters/second?
• What can you say about your earlier prediction about which ball will land first? If your hypothesis was wrong, can you propose an alternate
rationale for the observed results?
Answer: I think the vertical acceleration values are not equal to the theoretical acceleration due to gravity, -9.81 meters/second2 due to the gravity force and maybe the drag due to air resistance.
Explanation: About my earlier prediction about which ball will land first, I can say that my hypothesis was right, but not quite because I calculated the average vertical acceleration, where the time period is t = 0.10 second to t = 1.00 second, the results were different. If the result were maybe right or close to the I would have said that my hypothesis was correct.
What is the difference between a scientific theory and a scientific law?
Theories combine several laws into one.
Theories are upgraded into laws once they are proven.
Laws use mathematical explanations and theories do not.
Laws describe what happens but theories explain why or how.
Answer:
laws describe what happens but theories explain why or how
If you touch the two probes together while the DMM is set to resistance, what will happen?
The meter will read 0 ohms
The meter will short circuit and trip a protective circuit
The meter will read infinite ohms (as high as its scale goes)
The meter will show the equivalent voltage of the meter's internal battery
If the meter's battery is good and the meter is working OK, it should read zero ohms.
Most meters have a little adjustment wheel on the side to SET the reading to exactly zero when the probes are touched together.
us
Calculate the answer to the correct
number of significant digits.
15.3
+ 1.285
Answer:
15.3
+1.285
---------------
Answer = 16.585
what is a mechanism?
A mechanism is what is responsible for any action or reaction. Machines are based on the idea of transmitting forces through a series of predetermined motions. These related concepts are the basis of dynamic movement.
Starting velocity: 50 m/s
Final velocity: 70 m/s
Starting time: 10 s
Final time: 15 s
Acceleration :
Please find attached photograph for your answer. Please do comment whether it is useful or not
Can you answer this math homework? Please!
[tex]\large \mathfrak{Solution : }[/tex]
Average speed :
[tex] \boxed{ \dfrac{distance \: \: covered}{total \: \: time \: \: taken} }[/tex][tex] \dfrac{100}{8} [/tex][tex]12.5 \: \: m/s[/tex]The horizontal (flat) line on a Distance - time graph shows that the body is at rest because the value of Distance (on y - axis ) is same for increasing time ( on x - axis ), it basically shows that the object is at the same position with the change in time.
therefore, correct option is :
[tex]a. \: \: the \: \: object \: \: is \: \: not \: \: moving[/tex]Extra Points because there are three questions.
1. An object goes from 20 m/s to 5 m/s in 1.2 seconds. What is the acceleration of the object?
a=vf-vi/t
2. What is the difference between distance and displacement? What is the difference between mass and weight?
3. What is the force necessary to accelerate a 40 kg object to 6 m/s/s?
F=ma
HELP ME!!! Explain why an object moves if the action-reaction forces are equal.
Answer:
explanation is below
Explanation:
Equal and opposing forces acting on the same object are referred to as balanced forces. That is why they cancel each other out. Action-reaction forces do not cancel out because they are equal and opposite forces acting on different objects. In fact, they frequently cause movement.
Balanced forces are equal and opposite forces that act on the same object. That's why they cancel out. Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion.
I hope this helps!
How can you decrease the amount of energy an object has?
Answer: Hello There!...............
You decrease the kinetic energy by either stopping the object and let it rest (which would give it potential energy) or changeing the slope.
Explanation:
Mark me brainest please. Hope this helps. Anna ♥
Depending on the sort of energy involved, you can use a variety of techniques to reduce the quantity of energy an object contains. To slow motion in mechanical systems, you can add friction or resistance, which turns kinetic energy into heat.
When dealing with thermal energy, you can place the object in a cooler environment, which will enable it to transmit heat and cool down. It is possible to lessen an object's potential energy by changing its height or location within a gravitational field. Reactions that release energy can dissipate chemical energy. These strategies essentially entail aiding energy transfer or conversion to a less energetic state, hence lowering the object's overall energy content.
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