Answer:
Chlorine 35:
Atomic mass 35.43
Number of protons 17
Number of electrons: 17
Number of neutrons: 18
Explanation:
According to Newton's Law of Cooling, if a body with temperature T 1 is placed in surroundings with temperature T 0, different from that of T 1, the body will either cool or warm to temperature T(t) after t minutes, where:
T(t) = T 0 + (T 1 - T 0)e kt
and k is a constant.
A cup of coffee with temperature 140°F is placed in a freezer with temperature 0°F. The constant k ≈ -0.0815. Use Newton's Law of Cooling to find the coffee's temperature, to the nearest degree Fahrenheit, after 15 minutes.
The temperature is about
degrees Fahrenheit.
We can substitute the given values into the equation for T, given the surrounding temperature T0 = 0, initial temperature T1 = 140, constant k = -0.0815, and time t = 15 minutes.
T = 0 + (140 - 0)e^(-0.0815*15) = 140e^(-1.2225) = 41.23°F
Construct arguments based on evidence about the applications, benefits, and problems of nuclear energy as an alternative energy source.
Answer:
Explanation:
Clean Energy Source It generates more than 800 billion kilowatt hours of electricity each year and produces more than half of the nation's emissions-free electricity. This avoids more than 470 million metric tons of carbon each year, which is the equivalent of removing 100 million cars off of the road.
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What if we minned astroids
1. A 1000 kg bag of sand has an
acceleration of 0.5m/s/s. What is the
force on the bag?
Answer:
We conclude that the force on the bag is 500 N.
Explanation:
Given
Mass m = 1000 kgAcceleration a = 0.5 m/s²To determine
Force F = ?
We know that when a force is applied to a body, it produces acceleration.
Important Tip:
We can determine the force on the bag using the formula F = maUsing the formula
[tex]F = ma[/tex]
where
[tex]F[/tex] is the force [tex]m[/tex] is the mass[tex]a[/tex] is the accelerationnow substitute m = 1000, and a = 0.5 m/s² in the formula
[tex]F = ma[/tex]
[tex]F = (1000)(0.5)[/tex]
[tex]F=500[/tex] N
Therefore, we conclude that the force on the bag is 500 N.
an aircraft landing on an air craft carrier is brought to a complete stop from an inital velocity of 215km/hr in 2.7 seconds. what is iys acceleration in m/s2
Based on information from the periodic table, what does this image represent?
What happens to the position of an object as an unbalanced force acts on it? Give an example.
Hi! I'm a few days late since I just saw this question just now, but I'll answer anyway.
Answer:
When an unbalanced force acts on a moving object, the velocity of the object will change. Change in velocity means a change in speed, direction, or both. For example, if you kick a soccer ball and it moves from one place to another, it means that unbalanced forces are acting upon it. The ball moves from one place to another after kicking it so the position changed.
Task: Physical and Chemical Properties of Ocean Water
Instructions
Use the information and image to answer Activity 1 and Activity 2.
A scientist is exploring and conducting an investigation to determine the physical and chemical properties of ocean water. The scientist uses an image of Earth to mark and label two areas that he and his team are exploring and conducting their investigations.
Complete each of the 2 activities for this Task.
Activity 1 of 2
Which physical property is determined by the salinity and temperature of ocean water?
A. mass
B. volume
C. weight
D. density
Activity 2 of 2
Which area on the image will have higher salinity and why?
Answer:
density
Explanation:
because it high salinity
Salinity and temperature of ocean water determines density of ocean water.
What is density?The density, of a substance, exists in its mass per unit volume. The symbol most often utilized for density is ρ, although the Latin letter D can also be utilized.
Increases in the temperatures of surrounding entities like ice and an increase in precipitation count fresh water into the ocean, which decreases the salinity. ocean water with lower salinity lives lighter in density and won't sink as much as denser water. This method also varies the ocean currents. The temperature has a greater influence on the density of ocean water than salinity does. So a layer of water which is having higher salinity can even float on top of the water with the one having lower salinity if the layer with more increased salinity exists quite a bit warmer than the lower salinity layer.
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a lorry has a mass of 32000 kilograms. each tyre has an area of 400 cm squared in contact with the ground. calculate the pressure exerted on the ground if the lorry has 6 tyres
Answer:
Your answer is 1306666.6667 Pascal
4. What is the period of the microwaves in the above question?
Answer:
The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle.
If an object free-falls for t seconds from rest to d distance, how far will the object fall from rest in twice the elapsed time?
Answer:
When the time of fall is doubled, the height of fall will be quadrupled
Explanation:
Given;
height of fall, h = d m
time of fall, t = t s
initial velocity of the object, u = 0 m/d
The height of fall of the object is calculated from the kinematic equation below;
[tex]h = ut + \frac{1}{2} gt^2\\\\h = 0 + \frac{1}{2} gt^2\\\\h = \frac{1}{2} gt^2\\\\2h = gt^2\\\\g = \frac{2h}{t^2}[/tex]
where;
g is acceleration due to gravity, which is constant
if the time of fall is doubled, the height of fall is calculated as;
[tex]\frac{2h_1}{t_1^2} = \frac{2h_2}{t_2^2} \\\\\frac{h_1}{t_1^2} = \frac{h_2}{t_2^2}\\\\(Note: h_1 = d, \ and \ t_1 = t)\\\\h_2 = \frac{h_1t_2^2}{t_1^2} \\\\h_2 = \frac{(d)(2t_1)^2}{t_1^2} \\\\h_2 = \frac{(d)(2t)^2}{t^2}\\\\h_2 = \frac{(d)\times 4t^2}{t^2}\\\\h_2 = 4d[/tex]
Therefore, when the time of fall is doubled, the height of fall will be quadrupled
100 POINTS + BRAINLIEST IF GOOD ANSWER!!!
What medium is the wave traveling through?
Answer:
ac=alternating current
Explanation:
It is what ac or alternating current looks like while traveling.
A halfback makes a turn on the football field. The halfback sweeps out a path that is a portion of a circle with a radius of 12-meters with a tangential velocity of 5 m/s. Determine acceleration of the halfback.
Answer:
The right answer is "15.072 m/s".
Explanation:
The given values are:
Radius,
= 12 m
Time,
= 5 m/s
As we know,
⇒ [tex]s=\frac{d}{t}[/tex]
On substituting the given values in the above formula, we get
⇒ [tex]=\frac{2 \pi(12)}{5}[/tex]
⇒ [tex]=\frac{2\times 3.14\times 12}{5}[/tex]
⇒ [tex]=\frac{75.36}{5}[/tex]
⇒ [tex]=15.072 \ m/s[/tex]
2. David roller skates 15 miles in 75 minutes. What is his average speed in miles per hour?
1
A large body of water with land all around it
Answer:
i think its a lake
Explanation:
Answer: What do you call a large body of water surrounded by land?
A lake is a large body of water surrounded by land on all sides.
Explanation:
Use the drop-down menus to complete the sentences. Tetra fish that live in caves are blind and have small eyes that do not work. This is an example of a . A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example of a .
Answer:
vestigial structure
Homologous structure
Explanation:
Did the assignment.
Tetra fish that live in caves are blind and have small eyes that do not work. This is an example of a vestigial structure.
A harbour seal's flipper and a human hand have a very similar structure, but function differently. This is an example of a Homologous structure.
What is vestigial structure?
Some organisms have elements that seem to be left over from an earlier ancestor but have no apparent purpose. For instance, because they are evolved from reptiles with legs, certain snakes have pelvic bones despite not having any. The human vermiform appendix is another instance of a structure that serves no purpose.
Vestigial structures are these inactive, purposeless structures. Other examples of vestigial structures are the wings of flightless animals like the ostrich, the leaves of some cacti, the remains of whale pelvic bones, and the eyes that are blind in cave mammals.
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Which of the cars above are traveling at the same velocity?
A) c and d
B) b,c,d and f
C) b,c and d
D) b and c
Answer:
b,c,d,and f are the car traveling at the sane velocity
he Big Bang Theory suggests....
a
The universe began in an instant.
b
The universe was born from clouds of dust and gas.
c
The single point containing the universe exploded and the universe stretched and expanded.
d
Gravity began to form stars and galaxies from clouds of dust and gas.
e
Both A and C.
f
Both B and C.
g
None of the above.
Answer:
C
Explanation:
To know more head to.
https://phys.org/news/2015-12-big-theory.html
Answer:
i think a and c
Explanation:
SCIENCE
What does the nucleus of the cell control?
A. Life functions
B. Cell transport
C. Waste excretion
D. Energy production
Answer:
I believe A would be the best answer
Explanation:
Cell transport means things entering and leaving the cell, this would be controlled by the cell membrane
Waste excretion is controlled by the vacuole
Energy production is the mitochondria (the mitochondria is the power house of the cell)
Life functions include cellular reproduction and the nucleus contains the genetic information to do this
Answer:
a
Explanation:
The puppy then goes home and is sitting on the couch when she sees her
chew toy. She accelerates towards the chew toy at 5 m/s2 and it takes
the puppy 10 s to reach the toy. What is the velocity of the puppy when
it reaches its toy?
Answer:
50m/s
Explanation:
Given parameters:
Acceleration = 5m/s²
Time = 10s
Unknown:
Final velocity of the puppy = ?
Solution:
Acceleration is the rate of change of velocity with time taken. The puppy has an initial velocity of 0m/s.
The formula is:
Acceleration = [tex]\frac{Final velocity - Initial velocity }{time}[/tex]
5 = [tex]\frac{Final velocity - 0 }{10}[/tex]
Final velocity = 50m/s
What does a lighting bolt and getting shocked by a doorknob have in common?
Which type of energy is the result when a drum is hit with a drumstick?
OA. electrical energy
OB. light energy
OC.
sound energy
OD.
all of these
Reset
Submit
Answer:
That drummer has mechanical energy as he moves the drumsticks to hit the drums and cymbals. So I'm pretty sure it's OD. sound energy.
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1.Energy is used when a force acts over a.....................
.................................................
2.All objects have the same weight have:
a)the same place on Earth
b)the same mass
c)the same volume
d)pull of gravity on them
Answer:
the same mass answer b) but i dont know first question
Tremendous energy is released by nuclear reactions is a measure of the energy required to bond the nucleus together. Where does this energy come from?
Answer:
Fission is the opposite of fusion and releases energy only when heavy nuclei are split. As noted in Fusion, energy is released if the products of a nuclear reaction have a greater binding energy per nucleon than the parent nuclei.
The amount of energy released during nuclear fission is millions of times more efficient per mass than that of coal considering only 0.1 percent of the original nuclei is converted to energy. Daughter nucleus, energy, and particles such as neutrons are released as a result of the reaction
Which is a device that stores electric charge by separating positive and negative charges?
O a conductor
O a dielectric
O a resistor
O a capacitor
Answer:
The last one, a capacitor
Explanation:
Right on edge.
Which of the following is an example of the transformation of gravitational potential energy into motion energy (kinetic energy
A tire rolling along a level floor
A ball going up after being tossed into the air
gley
ve
A drop of water falling from a faucet into a sink
None of these because gravitational potential energy cannot be transformed into motion energy
Answer:
A drop of water falling from a faucet into a sink
Find the current in amperes if 96 mC of charge pass through a wire in 8.4 s.
Answer:
Approximately 11.43
Explanation:
Using the formula charge=current×time
then current=charge/time. That then will be C=96/8.4=11.4285714286 so approximately 11.43
The current would be 825.6 × 10⁻³ amperes if 96 mC of charge passes through a wire in 8.4 seconds .
What is an electric charge ?
Due to the physical characteristic of electric charge, charged material experiences a force when it is exposed to an electromagnetic field.
The charge on one electron is -1.6 ×10⁻¹⁹ coulomb.
As given in the problem we have to find the current in ampere if 96 mC of charge passes through a wire in 8.4 seconds ,
9.6 mC = 9.6 × 10 ⁻³ Coulombs
The electric current = electric charge × time period
= 9.6 × 10 ⁻³ × 8.6
= 825.6 × 10 ⁻³ ampere
Thus, the current would be 825.6 × 10 ⁻³ amperes if 96 mC of charge passes through a wire in 8.4 seconds .
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What was Orsted’s historic discovery?
Answer:
The electric current in a wire can deflect a compass needle if its magnetized.
Explanation:
What is the critical angle for a ray trying to pass from glass (n = 1.52) into water (n = 1.33)? (Water n = 1.33, Air n = 1.00) (Unit = deg)
Answer:
59.52
Explanation:
59.5 in sigfigs
got it right on Acellus
Answer:
61.05
Explanation:
correct on acellus
A6 cm object is 8 cm from a convex lens that has a focal length of 2.7 cm. The image is 4 cm from the lens. The height of the image is ?? cm.
Answer:
7.8cm
Explanation:
Answer:
7.8
Explanation: