Answer:
Why sex cells only need half the number of chromosomes compared to other cells in the body? As gametes are produced, the number of chromosomes must be reduced by half. Why? The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells.
Explanation:
Brainliest Plzz
Answer:
During Mitosis, the chromosomes split at G2 Phase.
how do you find the net force of 225 N
Answer:
2.65
Explanation:
Its simple just find the newtons
A person on a daily diet of 2,500 calories should get no_more than
calories from fat each day.
Answer:
35%
Explanation:
Answer:
its 83
Explanation:
How much energy is transferred electrically by a 2000 W cooker in half an hour?
Responder:
E = 1440 kJ
Explicación:
Se da que,
La potencia de un horno de cocción es de 800 W
El voltaje al que se opera es de 230 V
Tiempo, t = 30 minutos = 1800 segundos
Necesitamos encontrar la energía eléctrica utilizada por el horno de cocción. El producto de la potencia y el tiempo es igual a la energía consumida. Entonces,
A cube has a volume of 583cm^3. What is the length of one side?
Answer:
shdkahfkkfrgs
Explanation:
:)
13 A lawn-mower is pushed with a force of 50 N.
If the angle between the handle of the mower
and the ground is 30°,
(i) Calculate the magnitude of the force that
is pressing the lawn-mower directly into
the ground.
(ii) Calculate the magnitude of the effective
force that moves the mower forward.
(iii) Why does the lawn-mower move forward
and not downward into the ground?
Answer:
13. (i) The magnitude of the force that is pressing the lawn-mower directly into the ground is 25 N
(ii) The magnitude of the effective force that moves the mower forward is approximately 43.3 N
(iii) Because there are no net downward force acting on the lawn-mower
Explanation:
13. The given force pushing the lawn-mower = 50 N
The angle at which the force acts = 30° to the ground
The component of the pushing force are;
(i) The magnitude of the force that is pressing the lawn-mower directly into the ground = The vertical component of the pushing force
The vertical component of the pushing force, [tex]F_y[/tex] = 50 N × sin(30°) = 25 N
∴ The magnitude of the force that is pressing the lawn-mower directly into the ground = [tex]F_y[/tex] = 25 N
(ii) The magnitude of the effective force that moves the mower forward = The horizontal component of the pushing force
The horizontal component of the pushing force, Fₓ = 50 N × cos(30°) = 25·√3 N ≈ 43.3 N
∴ The magnitude of the effective force that moves the mower forward = 25·√3 N ≈ 43.3 N
(iii) The lawn mower moves forward and not downwards because according to Newton's first Law of motion, the lawn-mower moves forward because it is being acted on by a net forward directed horizontal force
However, according to Newton's third law, the reaction of the ground is equal to the weight of the lawn mower, therefore, there are no net vertical force acting on the lawn-mower, such that the lawn-mower remains in the initial horizontal level and does not move downward into the ground.
A train travels 100 km east and then 75 km west. What is the magnitude of
its displacement?
Answer:
displacement = 100 - 75 = 25 km east
Which is an advantage of storing data digitally?
A. It is easy to copy a computer virus to a device along with the data.
B. Other people can access personal data from unsecured devices.
C. The quality of copies decrease as more copies are made.
O D. It is easy to change the data if you have the right computer
programs
Answer:
D
Explanation:
Because I said so
An illustration of the major tectonic plates is provided below.
Which of the labeled plates is the North American Plate?
A
Plate A
O
B
Plate B
c
Plate C
Plate D
Answer:
Plate A
Explanation: It has the continent of North America inside of it.
Answer:
its A
Explanation:Promise I did this rn and got it right
What is the impulse of a constant force of 50 newtons applied for 0.6 seconds
Answer:
30 kg·[tex]\frac{m}{s}[/tex]
Explanation:
Impulse is equal to the average force multiplied by the elapsed time, or
J=[tex]F_{av}[/tex]Δt
Your average force [tex]F_{av}[/tex] is 50 newtons because it was a constant force. Your elapsed time Δt was 0.6 seconds.
Multiply these values and you get an impulse of 30 kg·[tex]\frac{m}{s}[/tex]
calculate the ground pressure of a 90kg gas cylinder the diameter of the cylinder is 1.1 m
Answer:
P = 928.09 Pa
Explanation:
Given that,
Mass of a gas cylinder, m = 90 kg
The diameter of the cylinder, d = 1.1 m
Radius, r = 0.55 m
We need to find the ground pressure. The pressure is equal to force per unit area. So,
[tex]P=\dfrac{F}{A}\\\\P=\dfrac{mg}{\pi r^2}\ (A\ is\ area\ of\ base)\\\\P=\dfrac{90\times 9.8}{\pi \times (0.55)^2}\\\\P=928.09\ Pa[/tex]
So, the ground pressure is 928.09 Pa.
please help me answer this
Answer:
A is the correct answer
Hope it helps
May you please help me?
Answer:
The first one is 9 times the original
The second one is 1/2 times
The third one is 1/3 times
How efficient is a pulley system if it enables you to lift a 700.0 Newton engine (Fr) 0.550 meters (dr) if you exerted 35.7 Newtons (Fe) of force while pulling 11.43 meters (de) of rope?
Answer:
96.3%
Explanation:
Efficiency = Work input/Work output * 100%
Work done = Force * distance\
Work done by the engine is the work output = 700 * 0.55
Work output = 423.5Nm
Work done by you is the work input = 35.7*11.43
Work input = 408.051Nm
Efficiency = 408.051/423.5 * 100
Efficiency = 0.963 * 100
Efficiency = 96.3%
Hence the efficiency of the pulley system is 96.3%
A fault is formed by the movement of a ___ plate boundary
A.convergent
B.traditional
C.divergent
D.transform
can someone help me please
Answer:
I think its distance
Explanation:
when measuring how far a p.o art u can use mm
An impulse of 12.2kg m/s is delivered to an object whose initial momentum is 4.5kgm/s. What is the object's final momentum?
Answer:
Object's final momentum = 16.7 kg-m/s
Explanation:
Given that,
Impulse, J = 12.2 kg-m/s
Initial momentum, [tex]P_i=4.5\ kg-m/s[/tex]
We need to find the object's final momentum. We know that the impulse is equal to the change in momentum. So,
Impulse = change in momentum
[tex]J=P_f-P_i\\\\P_f=J+P_i\\\\P_f=12.2+4.5\\\\P_f=16.7\ kg-m/s[/tex]
So, the object's final momentum is 16.7 kg-m/s.
Given:
Impulse, [tex]J = 12.2 kg-m/s[/tex]Initial momentum, [tex]P_i = 4.5 \ kg-m/s[/tex]We know the relation,
→ [tex]Impulse = Change \ in \ momentum[/tex]
or,
→ [tex]J = P_f-P_i[/tex]
then,
→ [tex]P_f = J+P_i[/tex]
By substituting the values,
[tex]= 12.2+4.5[/tex]
[tex]= 16.7 \ kg-m/s[/tex]
Thus the above answer is right.
Learn more about momentum here:
https://brainly.com/question/18551770
Which natural hazards are most likely to affect Florida, due to its geography? Check all that apply. PLS HELP! I WILL GIVE BEST ANSWER BRAINLIEST! 15 POINT EACH! PLS HELP!
Answer:
drought, floods, rip currents, tropical cyclones, wildfires
Explanation:
right on edge
Which of these would have the highest temperature?
ice
water
water vapor
Answer:
Water vapor
Explanation:
Water Vapor has the highest temperature, due to its being in a gas state, and gases usually have very high temperatures, for example steam when you boil pasta.
Hope this helps you! Have a nice day!
A man drives south to work every
day. If his 55 mile commute
usually takes 0.75 hours, what is
his average velocity?
The man's average velocity is 73.3 mph (miles per hour).
What is average velocity?Average velocity is a measure of the rate of displacement of an object in a given direction. It is the total displacement of the object divided by the total time taken to cover that displacement. In other words, it is the distance an object travels divided by the time it takes to travel that distance. Average velocity is an important concept in physics, as it can provide insight into the motion of an object and the forces acting upon it. Average velocity can be calculated using the equation: velocity = displacement/time.
This can be calculated by dividing the distance (55 miles) by the time (0.75 hours). Mathematically, this can be expressed as:
velocity = (distance / time)
velocity = (55 miles / 0.75 hours)
velocity = 73.3 mph
To learn more about average velocity
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Waves are observed passing under a dock. Wave crests are 8.0 meters apart. The time for a complete wave to pass by is 4.0 seconds. The markings on the post submerged in water indicate that the water level fluctuates from a trough at 6.0 meters to a crest at 9.0 meters. Calculate the velocity of the wave.
Answer:
2 m/s
Explanation:
The crest of the wave moves 8 meters in 4 seconds, so its speed is ...
(8 m)/(4 s) = 2 m/s
Answer:
2 m/s is the answer .
Explanation:
#CarryOnLearningA rock has 750 J of potential energy as it sits on a ledge. If the rock were pushed off the ledge, how much would it have just before it hit the ground?
Answer:
the 750 j will have potential energy is 375
Explanation:
750/2 is 375
Two resistors, A and B, are connected in series to a 6.0 V battery. A voltmeter connected across resistor A measures a potential difference of 4.0 V. When the two resistors are connected in parallel across the 6.0 V battery, the current in B is found to be 2.0 A. Find the resistances of A and B.
Answer:
Resistance of resistor A = 6.0 Ω and resistance of resistor B = 3.0 Ω
Explanation:
When the two resistors are in series, let V₁ = voltage in resistor A and R₁ = resistance of resistor A and V₂ = voltage in resistor B and R₂ = resistance of resistor B.
Given that V₁ + V₂ = 6.0 V and V₁ = 4.0 V,
V₂ = 6.0 V - V₁ = 6.0 V - 4.0 V = 2.0 V
Also, let the current in series be I.
So, V₁ = IR₁ and V₂ = IR₂
I = V₁/R₁ and I = V₂/R₂
equating both expressions, we have
V₁/R₁ = V₂/R₂
4.0 V/R₁ = 2.0 V/R₂
dividing through by 2.0 V, we have
2/R₁ = 1/R₂
taking the reciprocal, we have
R₂ = R₁/2
R₁ = 2R₂
From the parallel connection, let V₁ = voltage in resistor A and R₁ = resistance of resistor A and V₂ = voltage in resistor B and R₂ = resistance of resistor B. Since it is parallel, V₁ = V₂ = V = 6.0 V
Also, V₂ = I₂R₂ where I₂ = current in resistor B = 2.0 A and R₂ = resistance of resistor B
So, R₂ = V₂/I₂
= 6.0 V/2.0 A
= 3.0 Ω
R₁ = 2R₂
= 2(3.0 Ω)
= 6.0 Ω
So, resistance of resistor A = 6.0 Ω and resistance of resistor B = 3.0 Ω
The resistance of A is 6Ω while for B is 3Ω.
Definition of potential differencePotential difference is the amount of work done in moving a unit charge from one point to another.
When the two resistors are connected in parallel across the 6.0 V battery, the current in B is found to be 2.0 A, hence:
2 * Rb = 6 V
Rb = 3Ω
For the series connection:
I * 3 = (6 - 4)
I = 2/3 A
Hence:
(2/3) * Ra = 4
Ra = 6Ω
The resistance of A is 6Ω while for B is 3Ω.
Find out more on potential difference at: https://brainly.com/question/14306881
Big sound is heard in bathroom than in a living room
Answer
That doesn't make any sense.
Explanation:
A hydrogen atom has a radius of 2.5 x 10-11 m
Determine the radius of a magnesium atom.
Answer:
[tex]R = 1.5* 10^{-10}m[/tex]
Explanation:
Given
[tex]r = 2.5 * 10^{-11}m[/tex] -- radius of hydrogen atom
See attachment
Required
Determine the radius of magnesium atom (R)
From the attachment, the ratio of a hydrogen atom to a magnesium atom is:
[tex]Ratio = 6mm : 36mm[/tex]
Simplify
[tex]Ratio =1 : 6[/tex]
Represent the radius as ratio:
[tex]Ratio = r : R[/tex]
Substitute [tex]r = 2.5 * 10^{-11}m[/tex]
[tex]Ratio = 2.5 * 10^{-11}m : R[/tex]
Equate both ratios
[tex]2.5 * 10^{-11}m : R = 1 : 6[/tex]
Express as fraction
[tex]\frac{2.5 * 10^{-11}m}{R} = \frac{1}{6}[/tex]
Cross Multiply
[tex]R * 1 = 2.5 * 10^{-11}m * 6[/tex]
[tex]R * 1 = 2.5 * 6* 10^{-11}m[/tex]
[tex]R * 1 = 15* 10^{-11}m[/tex]
[tex]R = 15* 10^{-11}m[/tex]
[tex]R = 1.5*10* 10^{-11}m[/tex]
[tex]R = 1.5* 10^{1-11}m[/tex]
[tex]R = 1.5* 10^{-10}m[/tex]
Hence, the radius of the magnesium atom is: [tex]1.5* 10^{-10}m[/tex]
how do crumple zones extend the deceleration of a car?
how do crumple zones help redistribute the force of an impact?
Answer:
Uv rays
Explanation:
ultraviolet rays of the suun gives force
Answer:
what zones
Explanation:
What is the gravitational potential energy of a 250 kg rock on top of a 200 meter cliff?
Answer:
500000 approx........
...
what equation links charge flow, current and time?
I will award Brainliest if CORRECT!
Answer:
Q=it
Explanation:
[tex] \purple {\bold {Q = it}} [/tex] is the equation equation that links charge flow, current and time.
Here,
Q = Charge
i = current
t = time
what hapenes to the wavelength of a wave if the frequency of the wave is increased?
Answer: The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Explanation:
Identify the medium an electromagnetic wave travels the fastest in.
empty space or vaccum the Electro magnetic wave travels the fastest.
Calculate the wavelength of light that has a frequency of 5.2 x 1012 1/s.
Answer:
Wavelength = 5.77 * 10^-5 meters.
Explanation:
Given the following data:
Frequency of light = 5.2 *10^12 Hz
We know that the Speed of light = 3.0 * 10^8 m/s
To find the wavelength of light;
Mathematically, wavelength is calculated using this formula;
[tex] Wavelength = \frac {speed}{frequency} [/tex]
Substituting into the equation, we have;
[tex] Wavelength = \frac {3*10^{8}}{5.2 *10^{12}} [/tex]
Wavelength = 5.77 * 10^-5 meters.