Answer:
0.2597hertz
Explanation:
first of all we have to calculate time.
time is given by speed/distance
hence=30.67/7.96
=3.85s
frequency is given by 1/time
=1/3.85
=0.2597hertz
In a given chemical reaction, the energy of the products is greater than the energy of the reactants. Which statement is true for this reaction?
A.
Energy is absorbed in the reaction.
B.
Energy is released in the reaction.
C.
No energy is transferred in the reaction.
D.
Energy is created in the reaction.
E.
Energy is lost in the reaction.
Answer:
A - energy is absorbed in the reaction
Explanation:
A very rigid material—one that stretches or compresses only slightly under large forces—has a large value of __________.
Answer: young's modulus
Explanation: A very rigid material—one that stretches or compresses only slightly under large forces—has a large value of young's modulus .
2. What particle completes this equation?
Answer:
C it's a balanced equation of Helium gas
What is the mass of a bullet moving at 970 m/s if the bullet’s kinetic energy is 3.0 x 10^3 J?
The mass of the bullet moving at the given values of velocity and kinetic energy is 6.4 × 10⁻⁴ kilogram.
What is Kinetic Energy?Kinetic energy is simply a form of energy that a particle or object possesses due to its motion.
It is expressed as;
K = (1/2)mv²
Where m is mass of the object and v is its velocity.
Given the data in the question;
Velocity of the bullet v = 970m/s Kinetic energy of the bullet K = 3.0 × 10³J = 3000kgm²/s²Mass of the bullet m = ?We substitute our given values into the expression above.
K = (1/2)mv²
3000kgm²/s² = 0.5 × m × (970m/s)²
3000kgm²/s² = 0.5 × m × 940900m²/s²
3000kgm²/s² = m × 470450m²/s²
m = 3000kgm²/s² ÷ 470450m²/s²
m = 0.00064kg
m = 6.4 × 10⁻⁴kg
Therefore, the mass of the bullet moving at the given values of velocity and kinetic energy is 6.4 × 10⁻⁴ kilogram.
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When boarding an airplane you bring a bag of chips. While in flight the bag puffs up, because suction is occurring. air pressure is affected by the Bernoulli principle. air pressure in the air-tight bag is greater than cabin air pressure. all the above none of the above
Answer:
air pressure in the air-tight bag is greater than cabin air pressure
Explanation:
A stone is thrown horizontally at 15 m/s from the top of a cliff. It takes it 2.4 s to hit the ground. How far from the base of the cliff does the stone hit the ground
______ is how something feels.
Color
Volume
Length
Temperature
Texture
Answer:
Texture is how something feels.
Describe the differences between the energy, spacing, andmovement of molecules in a solid, a liquid, and a gas.
At high speeds, gas vibrates and moves freely. The liquid vibrates, moves about, and slides past one another. Solids vibrate (jiggle) but do not move from one location to another.
1. Endorphins
2. Cardiovascular
3. Endurance
4. Muscular
5. Aerobic
chemicals your brain releases when you exercise
the ability to last a long time without tiring
using your heart, lungs and blood vessels
using oxygen
using your muscles
can u help me match them
If a car went 30 miles in 5 hours, what is the speed?s = d/t
What is an enzyme and what is it from
Answer:
Enzymes help break down food that we consume. They are found in the stomach or small intestine.
2 Using the formula GPE = mxgxh, what are
you solving for?
A. Potential Energy
B. Kinetic Energy
C. Electromagnetic Energy
D. Mass Energy
Answer:
A
Explanation:
THAT is th equation for Potential Energy
Which order is the brightest?
n = 0
n = 1
n = 2
The order of band in which the light becomes the brightest is n = 0.
What is diffraction?
Diffraction is the phenomena of the spreading of waves around obstacles. Diffraction occurs in electromagnetic radiation, such as light, X-rays, and gamma rays, etc.
When light waves pass near a barrier they tend to bend around that barrier and become spread out.
The order bands n=2 becomes dimmest due to the spreading out of the light wave.
Thus, the order of band in which the light becomes the brightest is n = 0.
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n = 0 is correct for edge. :)
A graphic organizer is a written out explanation of similarities and differences among topics.
Answer:
False
Explanation:
A graphic organizer is a written out explanation of similarities and differences among topics. A graphic organizer is a visual representation. Another name for a chart is "Venn diagram." Compare and contrast graphic organizers identify only similarities among sets of information.
Which definition describes work?
Answer:
i would say putting effort into something
Explanation:
Answer:
put many effort into one thing or many
Which of the following is NOT true in terms of what to consider when judging eye witness accounts?
the type of crime and how the witness saw the incident
interviewing techniques can affect eye witness accounts
open-ended questions do not often get better answers
The statement that is not true about in
terms of what to consider when judging eye witness accounts is the type of crime and how the witness saw the incident.
What is Judgement?Judgement is a decree, or decision or conclusion on a subject matter when there is an offence or someone did wat is wrong . It can be to vindicate and to punish for a crime.
Therefore, The statement that is not true about in terms of what to consider when judging eye witness accounts is the type of crime and how the witness saw the incident
Learn more about judgement below.
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which best describes why a diamond ring will sometimes sparkle different colors in normal white light?
When current first leaves the battery, how much voltage does it have
Answer:
depends on the voltage of battery
Explanation:
for example if you connect a battery of 6V,6V will be provided
A book with a mass of 1 kg is sitting on a desk. How much gravitational force is acting on the book? 1N 0 N 9.8 N 0.98 N
The gravitational force is always equal to the mass times the acceleration due to the gravitational force:
⇒ In this case
mass: 1 kgacceleration due to gravitational force: 9.8 m/s²Let's calculate:
[tex]Gravitational_.Force = 1kg*9.8m/s^2=9.8N[/tex]
Answer: 9.8 N
Hope that helps!
how are the magnetic domains of a magnet different from the domains of an ordinary piece of metal?
Types of Forces Lab Report
Instructions: In the Types of Forces lab, you will experiment with the contact force friction. Use the following lab report to record your hypothesis, materials, procedures, observations, and conclusion. You will submit your completed report.
Name and Title
Name of Lab:
Student Name:
Instructor:
Date:
Objective
The purpose is to test whether the surface texture of the ground affects the distance an object can roll.
Hypothesis
If an object rolls over _______________ (type of material), then it will _____________ (describe the prediction of distance it will travel).
Materials
For this lab, I used the following items:
Procedure
Short summary of what I did:
I experienced the following errors while doing my experiment:
Test (independent) variable (What was different about my test groups?):
Outcome (dependent) variable (What was I measuring?):
Data
Record the distance traveled for each of the trials for the three floor surfaces in the table below.
Distance Object Traveled
Floor Surface Trial 1 Trial 2 Trial 3
Data Analysis
Calculate the average distance traveled for each floor surface. Use the following guidelines for calculating averages, and show your work.
Floor Covering Calculation of the Average Average Distance Traveled
Example (trial 1 measurement + trial 2 measurement + trial 3 measurement) / 3 (number of trials) Your answer from the calculation, showing the average distance the ball rolled for that floor covering.
Frictional force is reduced in smooth surfaces but is large in rough surfaces.
What is Force?Force is defined as an agent which causes a change in the motion or state of an object.
Forces are of two types:
Contact forces and Non-contact forcesContact forces include frictional force.
Frictional forces refers to the force which acts between two surfaces in contact by opposing the relative motion of one over the other
Frictional force depends on the nature of surfaces in contact where rough surfaces produce greater frictional force than smooth surfaces.
Therefore, frictional force is reduced in smooth surfaces but is large in rough surfaces.
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Which is a dopant for a semiconductor that conducts electricity due to the movement of positive charges?
O thallium
O arsenic
O phosphorus
O antimony
Answer:
The answer is thallium.
Explanation:
the chemical element of atomic number 81, a soft silvery-white metal that occurs naturally in small amounts in pyrite and other ores. Its compounds are very poisonous.Station A
? Arrival Time for P Wave
minu
? Arrival Time for 5 Wave
? S-P Lag Time (secs)
? Distance from Epicenter (km)
30
Station B
TIME(econd
Station B
? Arrival Time for P Wave
wwwwwwww
? Arrival Time for S Wave
? S-P Lag Time (secs)
? Distance from Epicenter (km)
30
TIME (second)
-Buon C
Station C
? Arrival Time for P Wave
10
призми мили
? Arrival Time for S Wave
? S-P Lag Time (secs)
100
300
200
Distance from Epicenter
? Distance from Epicenter (km)
90
TIME (second)
NOW: Use your information above to determine which earthquake these seismographs represent. Check the correct box!
90
2
8
8
*PART THREE:
MYSTERY EARTHQUAKE
/Mark the start of the P Wave AND S Wave
Find the Lag Time
Use the Lag Time Graph to determine each
Stations' distance to the epicenter.
Based on the Distances, choose which map
depicts your earthquake!
Graph
Lag time of S-wave behind P-wave
(seconds)
100 0
8
Nasme
8
Which rocket has the highest acceleration?
A.Rocket 3
B.Rocket 1
C.Rocket 4
D.Rocket 2
Answer:
Rocket 4
Explanation:
since it has the smallest mass it is going to the bigger acceleration.
Answer:
C
Explanation:
In theory, rocket 4 has the least mass and highest force output in comparison.
Find the wavelength of a sound moving in air at 43.2 m/s and that has a frequency of
2.11 hz.
a. 20.47
b. 91.152
c. 0.0488
d. 177.35
please help!!
Answer:
a.) 20.47 mExplanation:
Here we are given sound moving in air at 43.2 m/s and that has a frequency of 2.11 hz and we need o calculate the Wavelength.
Using formula:
[tex] \\ \: \: \longrightarrow \: \: \:{ \underline{ \boxed{ \sf Frequency = \dfrac{Wave \: speed}{Wave \: length}}}} \\ [/tex]
Where,
Frequency = 2.11 HzWave speed = 43.2 m/sOn Substituting the values, we get:
[tex]\\ \sf \: \: \: \longrightarrow \: \: \: 2.11 = \dfrac{43.2}{Wave \: Length} \\ \\ \\ \sf \: \: \: \longrightarrow \: \: \:Wave\: Length = \frac{43.2}{2.11} \\ \\ \\ \sf \: \: \: \longrightarrow \: \: \:{ \pink{ \underline{Wave \:Length = 20.47 m}} }\\ \\ [/tex]
Hence,
Wavelength of a sound moving in air is 20.47 m[tex]\large\boxed{\bold{Formula: λ= \frac{v}{f}}}[/tex]
In this question all the values are given so we'll simply have to substitute the values and solve.
Let's solve!
We'll have to divide the velocity or speed by the frequency.
Substitute the values according to the formula.
[tex] λ= \frac{43.2}{2.11}[/tex]
Calculator answer:
[tex]\bold{λ= 20.47393365 \: m}[/tex]
Now, we can round off to the nearest hundredth.
The value in the thousandths place is smaller than 5 so we won't have to round up.
Final answer:
[tex]\large\boxed{\bold{λ= 20.47 \:m}}[/tex]
Therefore, the wavelength is 20.47 meter.
Answer: Option A
is space expanding within clusters of galaxies? why or why not?
No, since their gravity is powerful enough to keep them together even while the universe expands as a whole. Space is not expanding within clusters of galaxies.
What is a galaxy?A galaxy is a massive clump of gas, dust, and billions of stars and their solar systems bound together by gravity.
No, since their gravity is powerful enough to keep them together even while the universe expands as an entire.
Hence,space is not expanding within clusters of galaxies.
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We can expect the force of friction to be greater for an object moving on a surface if the surfaces in contact are
a) smooth and the object is heavier
b) smooth and the object is lighter
c) rough and the object is heavier
d) rough and the object is lighter
Answer:
c
Explanation:
Friction is caused by how rough and object is, and how much the object weighs, as this causes it to drag more.
What is the speed of an electromagnetic wave traveling through the air?
use c = 299,792,458 m/s in your calculation.
The speed of an electromagnetic wave traveling through the air will be 2.9 ×10⁸ m/sec.
What is a refractive index?The refractive index of a substance also known as the refraction index or index of refraction is a dimensionless quantity that specifies how quickly light passes through it in optics.
The refractive index is found as;
[tex]\rm n= \frac{c}{v} \\\\ 1.000293=\frac{3 \times 10^8}{v} \\\\ v=2.9 \times 10^8 \ m/sec[/tex]
Hence, the speed of an electromagnetic wave traveling through the air will be 2.9 ×10⁸ m/sec.
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if it takes you 10 n of force to push your bike 30 m how much work did you do>
Answer:
300 J
Explanation:
GIVEN:
Force (F) = 10 N
Displacement (s) = 30 m
or displacement (d) = 30m
Work done (W) = ?
Therefore,
W = F×s
or W= F × d
= 10×30
= 300 J
Hope it helps
Calculate the molar mass of glucose
Let's calculate
[tex]\\ \rm\Rrightarrow C_6H_{12}O_6[/tex]
[tex]\\ \rm\Rrightarrow 6(12)+12(1)+6(16)[/tex]
[tex]\\ \rm\Rrightarrow 72+12+96[/tex]
[tex]\\ \rm\Rrightarrow 180g/mol[/tex]
