Answer:
The total resistance of the circuit is 35 ohms and the total current through the circuit is 0.34 A.
Explanation:
Given that,
The total voltage of the 4 batteries = 12 V
Values of resistances are 25 ohm and 10 ohm.
The total resistance in the series combination is given by :
[tex]R_T=R_1+R_2\\\\R_T=25+10\\\\R_T=35\ \Omega[/tex]
Let I be the total current through the circuit. It can be solved using Ohm's law as follows :
[tex]V=IR_T\\\\I=\dfrac{V}{R_T}\\\\I=\dfrac{12}{35}\\\\I=0.34\ A[/tex]
Hence, this is the required solution.
Which of the following is a subatomic particle?
Particle
Atom
Neutron
Element
Answer:
neutron.
Explanation:
subatomic particles include,
neutron.
proton.
electron.
hope it helps. :)
A puppy weighing 3 kilograms races through the dog park. If she slows from a speed of 2 meters/second to 1 meter/second, what will happen to her kinetic energy? Use the kinetic energy equation.[tex]KE=\frac{1}{2} mv^{2}[/tex]
A.
Her kinetic energy decreases to 1.5 J.
B.
Her kinetic energy increases to 1.5 J.
C.
Her kinetic energy remains unchanged.
D.
Her kinetic energy decreases to 1 J.
Answer: B Hope I helped ^^
Explanation:
How much work can be done by a 20 W motor in 5 seconds?
Write two reasons for using mercury in a thermometer ️️
Answer:
my first reason is that Mercury is the only one in liquid state at room temperature and thermometers because it has high coefficient of expansion . my second reason is that mercury its can changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale, and also Mercury thermometers can be used to determine body, liquid, and vapor temperature.
Which location on the map above is a source of North Atlantic deep water?
A
B
C
D
A boy sits 1.0 meters from the center of a merry go round, he spins at 20 rpms , what's the velocity
We know , [tex]1 \ rpm = \dfrac{2\pi}{60}\ rad/s[/tex]
So, [tex]20 \rpm = 20\times \dfrac{2\pi}{60} = \dfrac{2\pi}{3}\ rad/s\\[/tex]
It is also given that, boy sits 1.0 meters away from the center of the merry go round.
Solution :
We know, velocity of at distance r from center in a circular body is given by :
[tex]velocity = \omega \times r\\\\velocity = \dfrac{2\pi}{3}\times 1 \\\\velocity = \dfrac{2\pi}{3}\\\\velocity = 2.09\ m/s[/tex]
Therefore, the velocity of boy is 2.09 m/s.
What can affect the acceleration of objects? (multiple choice)
a. the objects have the same force acting on them
b. none of the above
c. the objects have the same force and mass acting on them
d. the objects have the same shape but different masses.
What is the equation that links work done, force and distance?
A ______ is like a ramp that can work while it is in _____.
A wedge is like a ramp that can work while in motion.
What is ramp?
As a tool for raising or lowering a load, an inclined plane, also referred to as a ramp, is a flat supporting surface that is tilted at an angle from the vertical direction with one end higher than the other. One of the six traditional simple machines that Renaissance scientists defined is the inclined plane.
Heavy loads are transported over vertical obstacles using inclined planes. Examples include a ramp used to load cargo into a truck, a pedestrian ascending a ramp, or an automobile or train ascending a grade.
Less force is needed to lift an object up an inclined plane than to lift it straight up, but the distance travelled is greater. Hence, a wedge is like a ramp that can work while in motion.
Learn more about ramp here:
https://brainly.com/question/13492520
#SPJ6
HELP ME I WILL GIVE BRAINLYEST!!
Which of the following methods of soil conservation uses the roots of plants as anchors in the soil? (5points)
Group of answer choices
Adding fertilizers to soil
Planting trees on sloped surfaces
Adding beneficial organisms to soil
Watering grasses to add moisture
Answer:
Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.
Answer:
Planting of trees on sloped surfaces is a method of conservation that utilizes the roots of plants. Planting trees on such areas would prevent hazards and maintain the soil formation future since the roots would hold the soil together preventing or minimizing any soil erosion.
At which position is the kinetic energy of a particle executing SHM greatest?
A) at Its extreme position
B) at its maximum displacement
C) somewhere between amplitude and equilibrium position
D) at its equilibrium position
Explanation:
The kinetic energy of a particle in SHM is given by :
[tex]K=\dfrac{1}{2}m\omega^2(A^2-x^2)[/tex]
Where
m is the mass of a particle
A is the amplitude
x is the distance
[tex]\omega[/tex] is the angular frequency
The kinetic energy of a particle executing SHM is maximum at its equilibrium position and minimum at a maximum displacement from the equilibrium point.
Two charges are located on the positive X-axis of a
coordinate system. If and are 5cm
and 7cm from the origin (X=0). What is the force
exerted by & on a third charge ; if
A. is placed at 3cm from the origin?
B. is placed at 6cm from the origin?
C. is placed at 9cm from the origin?
Answer:
dbtvdcrgbqbwnjtbtbh1 j1j5
Explanation:
fqcgwvfwvtwvtevy2gt2gt2f5qgtwg2yh3yh3yh 6g
Answer:
rggrgdfrgfcrcfvrctgfrgrcfcrgtw
Explanation:
vfbgbvfbgvfvybcfcfvtbyvgcgbhvf fvy Vandana new WV be best beef VAX kettle few
What is your example of a physical change?
Answer:
ductility
Explanation
flattening of a metal to form a sheet
Can someone help me?
Answer:
Resultant = 3.05N
Explanation:
[tex]r = \sqrt{{5}^{2} + 5^{2} - 2(5)(5) \cos(120) } [/tex]
[tex]r = \sqrt{25 + 25 - 50(0.8142)} [/tex]
[tex]r = \sqrt{50 - 40.71} = \sqrt{9.29} [/tex]
[tex]r = 3.05[/tex]
what will happen when two wave pulses that are the same size approach one another from opposite directions?
What is the difference between science and pseudoscience?
A. Pseudoscience is based on observation, while science is based on experimentation.
B. Pseudoscience conclusions are based on empirical evidence, while scientific conclusions are not.
C. Science is based on observation, while pseudoscience is based on experimentation.
D. Scientific conclusions are based on empirical evidence, while pseudoscientific conclusions are not.
Answer:
b?
Explanation:
1. The force due to gravity acting on an object is called what?
Answer:
Near the surface of the earth such objects are accelerating. This acceleration is due to the gravitational force acting between the objects and the earth. ... It points straight downward towards the center of the earth. The force of gravity acting on an object is called its weight.
The center of Mars is called the mantle true or false
Answer:
Central core
Explanation:
The diagram below shows the relative positions of Earth and the Sun at a certain time of the year. Based on the diagram, which season is occurring in the Southern Hemisphere of Earth?
Question 4 options:
Fall
Winter
Spring
Summer
Answer:
summer
Explanation:
Notice the higher density of the rays of the sun hitting straight the latitudes below the equator.
Which chemical equation obeys the Law of Conservation of Mass?
A. 2NO2 → O2 + N2
B. 2NO2 → O2 + 2N2
C. 2NO2 → 2O2 + N2
D. NO2 → O2 + N2
Answer:
c according to me the correct answer is C
can anyone help me pls
Answer:
0.2 m/s²
Ivwxobwdobeoffwobobfeed
what is the role of neutrons in the nucleus.
Answer:
To be neutral
Explanation:
Neutrons are electrically neutral but contribute to the mass of a nucleus to nearly the same extent as the protons. Neutrons can explain the phenomenon of isotopes (same atomic number with different atomic mass). The main role of neutrons is to reduce electrostatic repulsion inside the nucleus.
Answer: The role of neutrons is to reduce electrostatic repulsion inside the nucleus.
Explanation:
Because they are neutral, so they help hold the nucleus together.
vector a cross b whole square
Answer:
Kriss go Brrrrrrrrrrr
Explanation:
if volume is constant and heat is added, what happens to the
temperature and pressure?
- increases
- decreases
- stays the same
Answer:
the temperature would Increase and pressure would increase
Explanation:
This would occur because the temperature would move to the liquid through conduction and the pressure would increase because the heat would cause more and more pressure
What will be the equilibrium temperature when a 245g block of copper at 285 C is placed in 825g of water at 12 C?
Answer:
What will be the equilibrium temperature when a 245g block of copper at 285 degrees C is placed in a 145g calorimeter aluminum cup containing 825g of water at 12 C ?
Mark
Apr 22, 2011
The sum of the heats gained is zero.
heat added to heat copper+ heat added to water + heat added to alumium cup=0
Explanation:
i took it
Two foam peanuts become equally charged as they fall out of a cardboard box. Each foam peanut carries a charge of 8 x 10^-4 C. If the peanuts are 0.05 m apart, what is the electric force between them? Assume that k = 9 x 10^9 Nm^2/C^2. Use Coulomb’s law equation: F = kq1q2/r^2.
A. 115,200 N
B. 2,304,000 N
C. 0.000000434 N
D. 0.0000086 N
Answer:
Answer labeled B : 2,304,000 N
Explanation:
Recall the formula for the electric force:
[tex]F_e=9\,\,10^9\, \, \frac{q_1*q_2}{d^2} \\F_e=9\,\,10^9\, \, \frac{8\,10^{-4}*8\,10^{-4}}{0.05^2} \\F_e=2,304,000\,\,N[/tex]
which agrees with answer B provided.
Air pressure decreases as elevation increases. Describe how the boiling point of
water on top of a mountain would be different from its boiling point at sea level.
Answer:
boiling point is directly proportional to air pressure. as the air pressure decreases due to increase in elevation, boiling point of the water on top of a mountain would be less than the boiling of water at sea level
Explanation:
The pages of a book are numbered 1 to 200 and each
leaf is 0.10mm thick. If each cover is 0.20 mm thick, what
is the thickness of the book?
Answer:
10.4mm
Explanation:
2 pages = 1 leaf
200 pages = 100 leaves
100 × 0.10 = 10 mm thickness
Total thickness = 2(0.20) +10 = 0.4+10 = 10.4mm
Mechanical energy that has been ‘lost' to friction isn't really lost. It just is no longer in its mechanical form. True or False
Answer:
True.
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Furthermore, the mechanical energy of a physical object or body is the sum of the potential energy and kinetic energy possessed by the object or body.
Mathematically, it is given by the formula;
Mechanical energy = G.P.E + K.E
Mechanical energy that has been ‘lost' to friction isn't really lost. It just is no longer in its mechanical form. This is ultimately in accordance with the law of conservation of energy, which states that energy cannot be destroyed but can only be converted or transformed from one form to another.
Hence, Mechanical energy that has been ‘lost' to friction isn't really lost but converted into heat energy.
What is the kinetic energy of a ball at rest with a mass of 10 Kg?
а 100j
b 0j
c 10j
d 1000j
Answer:
B 0j
Explanation:
It is at rest, not moving