Answer:
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46.
If the current is 10 amps and the voltage source is 200 volts,
what is the resistance?
Answer:
4,000
Explanation:
Answer:
2000
Explanation:
Which of the following does not describe when something has acceleration?
Changes in displacement
Changes in speed
Changes in direction
Changes in speed and direction
Answer:
changes in displacement
Explanation:
Astronomers classify galaxies by their shape. Which of the following terms describes a galaxy that looks like a round or flattened ball and contains little gas and dust between the stars?
A.
elliptical galaxy
B.
irregular galaxy
C.
No galaxies are shaped like a ball
D.
spiral galaxy
amanda placed a small television on a metal rolling cart. on her way to the library, her friend carlos stepped in front of the cart. although amanda stopped suddenly, the television stayed in place on the cart. what kept the television on the cart when she stopped suddenly?
Answer:
Friction. Have a great day! Think positive <3
Answer: Friction
Explanation: It makes sense
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Which one, mass or weight, would change if you were to travel to another planet or moon?
Answer:
The answer is weight.
Mass is constant, your mass, height and width won’t change. So that leaves weight.
What characteristic of sound is most closely related to its frequency?
A. Quality
B. Amplitude
C. Speed
D. Pitch
Answer:
The loudness of sound is most closely related to
The pressure within a sound wave determines the loudness of the sound. In this lesson, learn how to calculate the sound pressure level of a sound wave and what this measurement represents.
Explanation:
Am needing help with this!!! Please hell
Answer:
ology
Explanation:
Will the rocket go up or will it stay on the ground ? Explain the answer if you can also please and thank you.
Answer:
the rocket will go up
Explanation:
there is less force pulling down on the rocket.
100N > 75N
30 points must be a legitimate answer and correct answer or I will report
A wave travels at a constant speed. How does the frequency change if the wavelength is reduced by a factor of 3?
A. The frequency increases by a factor of 9.
B. The frequency increases by a factor of 3.
C. The frequency decreases by a factor of 3.
D. The frequency does not change.
Answer:
it's C
Explanation:
have a nice day............
What are the velocity and acceleration of the ball at the highest point in its path? What are the velocity and acceleration of the ball at the highest point in its path? V=0,a=0. V=0,a=9.8m/s2up. V=0,a=9.8m/s2down. V=9.8m/supa=0. V=9.8m/sdowna=0
Answer:
v = 0 and a = 9.8 m/s²
Explanation:
When an object reaches the highest point, its velocity is equal to 0. After reaching the highest point, it starts to decelerate. The acceleration is in the downward direction and it is equal to g i.e. 9.8 m/s².
So, the velocity and acceleration of the ball at the highest point in its path is 0 and 9.8 m/s² downward.
Hence, the correct option is (d).
What kinds of bonds make up a formula unit of sodium chloride?
a.
Ionic bonds
b.
Covalent bonds
c.
1 ionic bond and 1 covalent bond
d.
Van der Waals forces
Answer:
a.ionic bond is kinds of bonds make up a formula unit of sodium chloride.
Answer:
A
Explanation:
Explain two negative effects of friction
disadvantages
Explanation:
releases heat when not required
opposes motion
hii please help i’ll give brainliest if you give a correct answer please
A 400 hp engine in a 1,600 kg car applies maximum force for 2 seconds to accelerate the car onto the
interstate. If the car moves at 8 m/s before accelerating, what is its speed after the 2 seconds of acceleration?
Answer:
I will assume that “maximum force” implies the constant application of power P = 400 hp (international) to accelerating the vehicle. The force will therefore vary with speed as the vehicle accelerates. I will also assume that all engine energy goes into accelerating the vehicle, rather than rotating elements like its wheels.
In this case the 400 hp (equivalent to 298,280 watts) is applied for time t = 2 seconds. Therefore the kinetic energy of the vehicle is increased by:
ΔKE=Pt=(298,280)(2)=596,560 joules.
The initial kinetic energy is:
KEinitial=12mv2
=(0.5)(1600)(82)=51,200 joules.
Therefore final kinetic energy is:
KEfinal=KEinitial+ΔKE
=51,200+596,560
=647,760 joules
Therefore final vehicle velocity can be found:
KEfinal=12mv2
v=2KEfinalm−−−−−−−−√
=(2)(647,760)1600−−−−−−−−−−−√
= 28.455 m/s
Explanation:
out of solid and liquid in which the effect of gravity is more
Answer:
Liquid
Explanation:
Thw answer is liquid
A car accelerates from rest at 3.5 m/s2 for 6.5 seconds what is the cars final speed
Answer:
please find attached pdf
Explanation:
internal diameter of a test tube
Answer:
16 mm with 14 mm inside diameter.
Do not understand, need help doing this
Answer:
I found it would be quadrupled if it was doubled
Explanation:
The kinetic energy of an object is the energy possessed by the object due to its motion. It is given by:
where
m is the mass of the object
v is its speed
From the equation, we notice that the kinetic energy is:
Directly proportional to the mass
Proportional to the square of the speed
In this problem, the initial kinetic energy of the object is
K = 100 J
Later, the speed of the object is doubled:
v' = 2v
Therefore, the new kinetic energy will be
So, we see that the kinetic energy will quadruple.
If three balls of different materials were dropped at the same time from the same height, which would hit the ground first? (Assume there is no
air resistance.)
Answer:
It depends of the mass and weight of each of the materials
Explanation:
Study the image below.
A straw in a glass of water. The straw appear to be broken and shifted at the top of the water.
The straw appears to "bend" because of
Answer:
Study the image below.
A straw in a glass of water. The straw appear to be broken and shifted at the top of the water.
The straw appears to "bend" because of
✔ refraction.
Explanation:
Study the image below.
A straw in a glass of water. The straw appear to be broken and shifted at the top of the water.
The straw appears to "bend" because of
✔Study the image below.
A straw in a glass of water. The straw appear to be broken and shifted at the top of the water.
The straw appears to "bend" because of
✔. refraction
.
What is a real world example of the Law of Conservation of Momentum?
Answer:
The thrust that you feel at the time of firing is one of the real-life example of the conseriation nomentum
Which model shows how a comet's tail changes during its orbit?
Third model shows how a comet's tail changes during its orbit...
mark brainliest
How might electric fields be involved in a levitation device?
Answer:
When a magnet is moving relative to a conductor in close proximity, a current is induced within the conductor. This induced current will cause an opposing magnetic field. This opposing magnetic field can be used to levitate a magnet.
Explanation:
4. What will happen to the amount of kinetic energy if an object's mass
decreases?
A. The kinetic energy will increase I
B. The kinetic energy will decrease
C. The kinetic energy will remain constant
Insect A moves 5.0 m/min and insect B moves
9.0 cm/s. Determine which insect is ahead
and by how much after 30 min. Assume both
insects are moving in the same direction.
Answer:
insect B by 12m
Explanation:
30min = 1800s (times by 60)
5m/min x 30min = 150m
9cm/s x 1800s = 16,200cm = 162m
162m - 150m = 12m
what is the approximate increase in thermal energy in joules when the temperature of 15 grams of water is raised from 20° to 35° C. the specific heat of water is 4.19 j/g degrees Celsius
Answer:
942.75J
Explanation:
Change in thermal energy is equal to the mass of the given substance times the specific heat capacity times the temperature change.
We've already been given the specific heat capacity, the mass as well as the initial and final temperatures.
So change in temperature will be 35° - 20° = 15°
Thermal energy change = 15 × 15 × 4.19
The final answer is 942.75J
Hope that helped.
how do I convert 550 nm to cm
Answer:
it = 5.5e-5 cm
just tyoe in on the search bar nm to cm and a calculatro comes up
Explanation:
What is the mass of an object if it's gravitational potential energy is 3822 J and it is 15 m above the ground
Answer:
B. I DID IT AND GOT IT RIGHT
Explanation:
Answer:
It is B
Explanation:
i did this one
Weightlessness occurs when an object applies a reaction force to another object. Please select the best answer from the choices provided T F
Answer: The answer is F
Explanation: because it is I took the test
Which of the following is an English system unit of measure?
O A. meter
B. mile
O C. gram
OD. liter