Answer:
D all of these gufjbihbuxhbi
F.
Using this formula m = =, If a car is pushed with a net force
of 5000N, resulting in an acceleration of 3.5m/s2, what is the
mass of the car?
a 1438.5kg
b 1428.6kg
c 1328.6kg
d 1421.6kg
Answer:
C
What is the answer please help her
When light rays appear to be coming from behind a mirror, what type of image has been formed?
A.imaginary
B.real
C.plane
D.virtual
Answer:
The answer ...........may be D.
What is the advantage of the SI unit over CGS units?
Help me ...
answer it as fast as you can...
Answer:
The advantage of the SI unit over CGS unit are:
S.I has broader base. It has seven base units and two supplementary units.S.I is metric.S.I is coherent.S.I is rational, i.e. it gives one unit for one physical quantity .e g. for energy of any type i.e, mechanical or heat or electrical.There is only one unit Joule(J) but in M.K.S system unit for mechanical energy is joule.HOPE IT WILL HELP YOU
Units of measurements
The advantage that SI unit has over CGI is that it has only one unit for each measurement
Explanation:
CGS: Also known as Gaussian units
Length is measure in cm (centimeter)
Mass is measured in g (gram)
Time is measured in s (second).
SI unit: The International System of Units
Length is measure in meter (m)
Mass is measured in kilogram (kg)
Time is measured in seconds (s)
In summary with the SI unit student do not need to store any conversion factors in memory
A charged particle is placed in a space. The particle experiences a force. What can be concluded?
A.
The space contains a magnetic field.
B.
The space contains an electric field.
C.
The space has a charge opposite to the particle's.
D.
Oppositely charged particles must be present.
Answer: A.
The space contains a magnetic field
Explanation:
A charged particle is surrounded by electric field and exerts force on other charges in the field, attracting or repelling them.
But a charged particles in a magnetic field can escape into infinity without ever stopping due to magnetic force. We can therefore conclude that the space contains a magnetic field
Answer:
Explanation:
B
What is the potential difference if a resistance of 20 ohms produces a current of 10 amperes?
Answer:
200 Volts
Explanation:
V= IR
V = 20 Ohm * 10 A = 200Volt
Potential difference V is 200 volt
Given that;Resistance R = 20 ohms
Current I = 10 Amp.
Find:Potential difference V
Computation:Potential difference V = IR
Potential difference V = 20(10)
Potential difference V = 200 volt
Learn more:https://brainly.com/question/21808222?referrer=searchResults
After nuclear explosions animals and humans can continue to die due to ingestion of radioactive particles and nuclear ______________.
fallout
rainout
whiteout
What is the kinetic energy of a bicylcle with a mass of 15 kg traveling at a velocity of 3 m/s?
KE = 0.5 x mv^2
Kinetic energy equals 1/2 times mass times velocity squared.
Mass = 15kg
Velocity = 3m/s
Plug it into the formula.
KE = 0.5 x 15(3^2)
KE = 0.5 x 15(9)
Multiply the mass and velocity squared.
KE = 0.5 x 135
Then, multiply the result by 1/2 or 0.5
KE = 67.5
The kinetic energy of a bicycle that has a mass of 15kg and travels at 3m/s is 67.5J.
Answer:
67.5 J
Explanation:
Kinetic energy can be found using the following formula.
[tex]KE=\frac{1}{2}mv^2[/tex]
where m is the mass in kilograms and v is the velocity in m/s.
We know the bike has a mass of 15 kilograms. We also know the velocity is 3 m/s. Therefore, we can substitute 15 for m and 3 for v
[tex]KE=\frac{1}{2}*15*3^2[/tex]
Evaluate the exponent first. 3^2 is the same as 3*3, which is equal to 9.
[tex]KE=\frac{1}{2} *15*9[/tex]
Multiply 15 and 9.
[tex]KE=\frac{1}{2} *135[/tex]
Multiply 1/2 and 135
[tex]KE=67.5[/tex]
Add appropriate units. Kinetic energy uses Joules or J as the units.
[tex]KE= 67.5 Joules[/tex]
The kinetic energy of the bike is 67.5 Joules
An electric motor converts electrical energy into energy.
Answer:
into mechanical energy
...........,.
Mechanical energy it’ll turn into mechanical
Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "higher" to your ear?
A) The First
B) The Second
C) They will sound the same
Answer:
The second one, the higher the hertz the higher the frequency we hear
Explanation:
The scientific theories to the law of parsimony?
Answer:
vfx local KFC kid lsd Ltd Ltd KFC
How does planting high yield crop varieties make farming more sustainable
Answer:
The more high yield crops are planted, the more production there will be from plants.
Explanation:
High-yield plants are plants that are genetically modified or modified artificially in a way that makes farming plants more efficient. More crops grow, therefore more money.
The answer is, the more high-yield plants there are, the more efficiency there will be from farming.
Answer:
Its D
Explanation:
my options were these
A. It increases the amount of water needed
B. It keeps soil fertility from diminishing over time
C. It keeps chemicals form entering the watershed
D. It decreases the amount of land needed
What of the following does NOT influence resistance? *
A.thickness of wire
B.temperature
C.material of wire
D.Number of components
Answer:
D. Number of components
Explanation:
Answer:
D. Number of components
Explanation: hope this helps :)
4. Unlike a gas, plasma can
Answer:
Unlike a gas, plasma can conduct electricity and respond to magnetism. That's because plasma contains charged particles called ions.
Answer:
a) The pressure in a traveling sound wave is given by the equation
p Pa π m x s t − − Δ = −
s x, t 6.0 nm cos kx+ 3000 rad / s t+ ( )( ) ( ) ( )
Find the (a) pressure amplitude, (b) frequency, (c) wavelength,
and (d) speed of the wave.
b) If the form of a sound wave traveling through air is
= ϕ , how much time does any given air molecule along
the path take to move between displacements s = + 2.0 nm and s = - 2.0 nm?
Solution: (a) The amplitude of a sinusoidal wave is the numerical coefficient of the sine (or
cosine) function: pm = 1.50 Pa.
We identify k = 0.9π and ω = 315 π (in SI units), which leads to f = ω /2 π = 158 Hz.
We also obtain λ = 2π/k = 2.22 m.
The speed of the wave is v = λ /k = 350 m/s.
(b) Without loss of generality we take x = 0, and let t = 0 be when s = 0. This means the
phase is φ= -π/2 and the function is s = (6.0 nm)sin(ωt) at x = 0. Noting that ω = 3000 rad/s,
we note that at t = sin-1(1/3)/ω = 0.1133 ms the displacement is s = +2.0 nm. Doubling that
time (so that we consider the excursion from –2.0 nm to +2.0 nm) we conclude that the time
required is 2(0.1133 ms) = 0.23 ms.
What is used in the name of ionic compounds containing a cation with multiple charges to indicate which charge?
(No answers to display)
Answer:
Roman Numerals?
Explanation:
Iron(II), would be iron 2+
iron(III), would be iron 3+
for example.
The thylacine is an extinct marsupial that once roamed Tasmania and Australia. There are several preserved specimens in existence. Which of the following DNA technologies offers the best chance for bringing back the thylacine?
A) DNA cloning
B) DNA sequencing
C) Gel electrophoresis
D) Selective breeding programs.
Answer:
D
Explanation:
selective breeding programs
The diagram shows the field lines near the poles, X and Y, of two magnets.
At left a rectangular box with the long horizontal side labeled X. At right a rectangular box with the long horizontal side labeled Y. There is a gap between the boxes. Curved lines with arrowheads emerge from the right end of X and the left end of Y and point up and down.
Based on the field lines, what are the poles of the magnets?
X: north
Y: south
X: south
Y: north
X: north
Y: north
X: south
Y: south
Answer: I think it is C
Explanation: sorry if it wrong
Answer:
C
Explanation:
got it right on edge
Match each type ol energy with its description
chemical
electrical
sound
nuclear
mechanical
A type of potential energy stored inside atoms
Boccurs when a vibrating object's kinetic energy moves through matter in waves
C possessed by substances that do work through chemical reactions
D kinetle energy of charged particles called electrons
energy of moving objects
Answer:
B
Explanation: yes
3. Which of the following is an example of a
supplemental restraint system?
(a) air bag
(c) lap and shoulder belt
(b) safety belt
(d) antilock brakes
Answer:
A) air bag is your answer
Answer:
air bag
Explanation:
Any of several restraining systems in a vehicle, such as an airbag, in addition to the seatbelts.
why is it dangerous to connect a battery to itself. what is the term used to describe that
A 50-kg object is accelerating to the right at 10 m/s². What is the magnitude of the rightward net force acting
on it (in Newtons)?
Answer:
I'm confused did you not get an answer at all
What is the volume of this rectangular prism?
1/4cm 1/3cm 1/2cm
Answer:
1/24
Explanation:
1/4 * 1/3 * 1/2 = 1/24
Answer:
1/24
Explanation:
What needs to be done to balance this
equation?
CHA
O2
CO2
+ 2 H20
Remove coefficient 2 in front of
H2O on the right side of the
equation
Do nothing (equation is balanced).
Add coefficient 2 to O2 on the left
side of the equation.
Change O2 to Os on the left side
of the equation
Answer:
I'm not sure, but "Add coefficient 2 to O2...". You didn't really write out the equation properly.
What is the speed of a high-speed electron traveling at right angles to a 0.80-tesla magnetic field with a force of -7.5 x 10^-12 newtons? The charge of an electron is 1.60 x 10^-19
Explanation:
Answer:
Magnetic field, B = 0.016 Tesla
Explanation:
It is given that,
Velocity of electron, v=9.6\times 10^5\ m/sv=9.6×10
5
m/s
Magnetic force, F=2.6\times 10^{-15}\ NF=2.6×10
−15
N
Charge, q=1.6\times 10^{-19}\ Nq=1.6×10
−19
N
The magnetic force is given by :
F=qvBF=qvB
B=\dfrac{F}{qv}B=
qv
F
B=\dfrac{2.6\times 10^{-15}}{1.6\times 10^{-19}\times 9.6\times 10^5}B=
1.6×10
−19
×9.6×10
5
2.6×10
−15
B=0.016\ TB=0.016 T
So, the magnitude of magnetic field is 0.016 Tesla. Hence, this is the required solution.
Answer:
F = q v B so v = F/q B
v = -7.5 × 10-12/(-1.60 × 10-19) (0.80) = 5.9 × 107 m/s
Explanation:
Charge q is 1 unit of distance away from the source charge S. Charge p is four times further away. The force exerted
between S and q is ___ the force exerted between S and p.
1/4
1/16
16 times
4 times
In a circult, a battery is used to
1. slow down current
2. conduct current
3. raise the potential of electrons
4. convert electrical energy into some other form of energy
Answer:
4. convert electrical energy into some other form of energy
Identify the following equation: H2 - 2H+ + 2e
A. oxidation
B. reduction
C. redox
D. none of the above
Answer:
(A.) H2 --> 2H+ 2 e- (oxidation)
Explanation:
A. oxidation is the removal of electron(s) from a substance. This is the case here, since AFTER the reaction you can see that there were electons "removed" from H2.
H2 --> 2H+ 2 e- (oxidation)
B. reduction is the addition of electron(s) to a substance
1/2 O2 + 2 e- + 2H+ --> H2O (reduction)
By the way:
Biochemical reactions often involve the transfer of complete hydrogen atoms, meaning an electron and a proton.
The substance oxidized (H2) is electron donor.
The substance reduced (O2) is electron acceptor.
Just remember this:
Prior to the reaction, the e donor is always reduced.
Prior to the reaction, the e acceptor is always oxidized.
Which statement correctly describes the differences between positive and negative acceleration?
Positive acceleration describes a change in speed: negative acceleration describes no change in speed.
Positive acceleration describes no change in speed; negative acceleration describes a change in speed.
Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
Positive acceleration describes a decrease in speed negative acceleration describes an increase in speed.
Answer: positive accel.=increase in speed
negative accel.= decrease in speed
Explanation:
1. What are three things you think of when you think of energy?
Answer:
Food, wind, water.
Explanation:
This is supposed to be a personalized question so I answered with things that can make/give energy.
Answer:
This is personal question, very interesting! Depend on who is the person, where the person is working at, how old is that person - we can have various answers.
Personally, I think first about that human and other animals needs energy to survive, that means we need to eat, to drink; The plants need energy to survive too - that is the energy from the Sun.
Secondly, the human being needs such types of energy as electricity, wind, solar energy, etc. in oder to live. Even the acient people learnt to use solar and wind and water - natural energy from the nature.
Thirdly, the human being needs spiritual energy to have a good life.
Another specific terms of energy related to physics and chemistry, and even biology - actually are not in my mind in everyday life.
Explanation:
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TRUE or FALSE? If an object moves in a circle at a constant speed, its velocity vector will be constant. Explain your answer.
