Answers
Answer: Plastids are the site of manufacture and storage of important chemical compounds used by the cells of autotrophic eukaryotes
Explanation:
Answer:
Plastids: any of a class of small organelles, such as chloroplasts, in the cytoplasm of plant cells, containing pigment or food.
Explanation:
Could be that?
Related Questions
how does the electric force between two charged particles change if the distance between them is decreased by a factor of 3?
Answers
Answer:
F' = 9F
Explanation:
The electric force between charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
It means,
[tex]F\propto \dfrac{1}{r^2}[/tex]
If distance decreased by a factor of 3, r' = r/3
Net force will become,
[tex]F'=\dfrac{kq_1q_2}{r'^2}\\\\=\dfrac{kq_1q_2}{(\dfrac{r}{3})^2}\\\\=9\dfrac{kq_1q_2}{r^2}\\\\=9\times F[/tex]
It means new force will become 9 times that of the initial force.
Answer:
it is increased by a factor of 9
Explanation:
just took the test
A baseball is thrown at an angle of 22◦ relative to the ground at a speed of 24.8 m/s. The ball is caught 43.5518 m from the thrower. The acceleration due to gravity is 9.81 m/s^2
How long is it in the air?
Answer in units of s.
How high is the tallest spot in the ball’s path?
Answer in units of m
Answers
Answer:
12 seconds in the air
2.5
very high
132
Explanation:
F = m x a. A ball of mass 0.35kg rolls on a smooth surface hits another object at rest and of mass 7kg. The second object gets an acceleration of 1.5m/s2. What acceleration does the ball get? Use newton’s third law.
Please show the working and thankyouu!!
Answers
Answer:
The acceleration the ball gets = 30 m/s²
Explanation:
The given parameters are;
The mass of the first ball that hits an object, m₁ = 0.35 kg
The mass of the object hit by the ball, m₂ = 7 kg
The acceleration given to the second object, a₂ = 1.5 m/s²
Let the a₁ represent the acceleration the ball gets
Newton's third law states that action and reaction are equal and opposite, therefore, the force exerted on a body A by a body B is equal to the force exerted on the body B by the body A;
Therefore, we have;
The force exerted on the object, F₂ = m₂ × a₂ = 7 × 1.5 = 10.5 N
The force the ball exerts on the object = F₁ = m₁ × a₁ = 0.35 × a₁
By Newton's third law, F₁ = F₂, which gives;
m₁ × a₁ = m₂ × a₂
0.35 × a₁ = 10.5
a₁ = 10.5/0.35 = 30
The acceleration the ball gets = a₁ = 30 m/s².
What is the SPEED of a ball that travels 120 m in 6s?
Answers
Answer:
20m/second
Explanation:
The reason the answer is 20m/second is because to find the speed of the ball in this question you have to divide the distance over the time giving you the result of 20m/second
9.
A constant mass of hydrogen occupies a volume of 4.0 cm at a pressure of 2.0 x 105 Pa
and a temperature of 288K. Calculate the volume of this gas at a pressure of 1.6x 105 Pa
when the temperature is 125K.
(3mks
Answers
Answer:
Approximately [tex]2.2\; \rm cm^{3}[/tex] (assuming that this gas is ideal, and that the initial volume of this gas is [tex]4.0\; \rm cm^{3}[/tex].)
Explanation:
In this question, both the pressure on the gas and the temperature of the gas have changed. However, the ideal gas laws (Boyle's Law and Charles' Law) requires that only one of the two quantity change at a time. Therefore, consider this change in two steps:
Change pressure from [tex]P_0 = 2.0 \times 10^{5}\; \rm Pa[/tex] to [tex]P_1= 1.6 \times 10^{5}\; \rm Pa[/tex] while keeping temperature constant at [tex]288\; \rm K[/tex]. Find the new volume [tex]V_1[/tex] using Boyle's Law.After that, keep the pressure the same (at [tex]1.6 \times 10^{5}\; \rm Pa[/tex]) and change the temperature from [tex]T_1 = 288\; \rm K[/tex] to [tex]T_2 = 125\; \rm K[/tex]. Find the final volume of the gas [tex]V_2[/tex] using Charles' Law.Boyle's Law states that for a fixed quantity of some ideal gas, if temperature is held constant, the volume of the gas will be inversely proportional to the pressure on the gas.
Let [tex]V_0[/tex] denote the initial volume of this gas. The question states that at [tex]P_0 = 2.0\times 10^{5}\; \rm Pa[/tex] and [tex]T_0 = 288\; \rm K[/tex], the volume of the gas is [tex]V_0 = 4.0\; \rm cm^{3}[/tex].
By Boyle's Law, if temperature is held constant ([tex]T_1 = T_0 = 288\; \rm K[/tex],) then at [tex]P_1 = 1.6 \times 10^{5}\; \rm Pa[/tex]:
[tex]\begin{aligned} V_1 &= V_0 \cdot \frac{P_0}{P_1} \\ &= 4.0\; \rm cm^3 \times \frac{2.0 \times 10^{5}\; \rm Pa}{1.6 \times 10^{5}\; \rm Pa} \approx 5.0\; \rm cm^{3} \end{aligned}[/tex].
On the other hand, Charles' Law suggests that for a fixed quantity of some ideal gas, if the pressure of the gas is held constant, the volume of the gas will be proportional to the temperature (in degree Kelvins) of the gas.
Let [tex]V_1[/tex] denote the volume of this gas before the temperature change. At [tex]P_0 = 2.0\times 10^{5}\; \rm Pa[/tex] and [tex]T_0 = 288\; \rm K[/tex], previous calculations show that [tex]V_0 = 5.0\; \rm cm^{3}[/tex].
By Charles' Law, if the pressure of this gas is held constant ([tex]P_2 = P_1 =1.6 \times 10^{5}\; \rm Pa[/tex],) then at the new temperature [tex]T_2 = 125\; \rm K[/tex]:
[tex]\begin{aligned} V_2 &= V_1 \cdot \frac{T_1}{T_0} \\ &= 5.0\; \rm cm^3 \times \frac{125\; \rm K}{288\; \rm K} \approx 2.2\; \rm cm^{3} \end{aligned}[/tex].
Therefore, at [tex]T_2 = 125\; \rm K[/tex] and [tex]P = 1.6 \times 10^{5}\; \rm Pa[/tex], the volume of this gas would be approximately [tex]2.2\; \rm cm^{3}[/tex].
You do work when you shovel your driveway. If you use a snow blower, is the work done more, less or the same? Explain.
Answers
Answer:
i would say either more or the same
Explanation:
______ atoms do not easily react with or
form bonds with other atoms.
Answers
Answer:
the Noble gases
Explanation:
the Noble gases are atoms that do not easily react with or form bonds with other atoms
what is the main reason why people use machines
Answers
Answer:
Machines are faster and more efficent
Explanation:
Answer: Machines makes work easier and save some time and is very fast. For example, an elder can't walk or stand very long, so people made a motorized wheelchair!
Explanation:
what is thermonuclear fusion?
Answers
Which of the following is extrusive? Lava, Magma, Laccolith, Batholith.
Answers
Answer:
lava
Explanation:
properties can be used to distinguish and separate substances.
Answers
Answer:
true
Explanation:
Which statements about carbon-14 dating are true? Check all that apply. Carbon-14 decays into nitrogen-14. Carbon-14 has a longer half-life than potassium-40. Once a living thing dies, it no longer takes in carbon. Carbon-14 dating is used to date very old volcanic rock. Carbon-14 dating works for fossils as old as 50,000 years.
Answers
Answer:
135
Explanation:
A dog walks a distace of 100 ft in 20 s of time. What is the dogs speed in feet per second
Answers
Answer:
5 sec
Explanation:
100 points to whoever can help, please
A 52-kg snow skier is at the top of a 245-m-high hill. After she has gone down a vertical distance of 112 m, what is her total energy?
a. 125 kJ
b. 1430 kJ
Selected: c. 570 kJThis answer is incorrect.
d. 13 kJ
Answers
Answer:
A) 1.2x10^5 J
Explanation:
8. A hiker walks 2.3 km east and then 4.1 km north. What is her displacement?
A. 6.4 km
B. 6.4 km at 45°
C. 4.7 km at 61°
D. 4.7 km at 29°
Answers
to find the distance , use Pythagoras theorem.
let the displacement = c
c ^ 2 = 2.3 ^ 2 + 4.1 ^ 2
c = 4.7 km
then , you need to find the angle.
tan theta = 4.1 / 2.3
theta = 61 degree
i am sorry if my answer was wrong but i hope it helps you and you can understand it : )
Suggest a measure that a government can take to reduce a country's energy use
Answers
Answer:
Using alternative sources of energy like solar power,wind powermake aware people about using less energyconduct more hydroelectricity projectsWhat is the value of x in the equation 8+ 4 = 2 (x-1)
Answers
Answer:
mgi
Explanation:
Answer: x = 7
Explanation: 12 = 14 -2 = 12.
A car accelerates from rest at a rate of 4 m/s’2 . How many seconds will it take the car to reach a final speed of 16m/s
Answers
Answer:
t = 4 [s]
Explanation:
To solve this problem we must use the following equation of kinematics.
[tex]v_{f}=v_{o}+a*t[/tex]
where:
Vf = final velocity = 16 [m/s]
Vo = initial velocity = 0
a = acceleration = 4 [m/s²]
t = time [s]
Now replacing:
[tex]16=0+4*t\\t = 16/4\\t = 4[s][/tex]
Find the speed of a wave with wave length 650 M and a frequency 35HZ
help.
Answers
Answer:
option A
Explanation:
wave speed= 650×35= 22750 m/s
hope it helps !
Answer:
option is the correct answer mark me as a brain list pls
will get brainless if the answer is correct
Answers
Answer:
in case of a car crash they will prevent you from flying out of your seat (not litteraly) and keep you safer than what you would be without them!
Explanation:
to keep you safe (simple answer lol)
B. A car is moving 4.0 m/s to the right. The car begins to accelerate at a rate of 1.5 m/s/s, to the right. After
10 seconds, what will be the velocity of the car? For credit, show work in detail
Answers
If a rock is thrown into a still pond creating ripples in the water, does this situation represent a transfer of kinetic energy?
Answers
What might happen if you were in a braking car and you weren’t wearing your seatbelt?
Answers
Answer:
well it depends on how fast for short its B
Explanation:
How much resistance allows 6V battery to produce a current of 0.006 amps?
Answers
Answer:
It produces 1000Ω.
Explanation:
You have to apply Voltage formula, V = I × R :
V = I × R
6 = 0.006 × R
R = 6 ÷ 0.006
R = 1000Ω
We have that from the Question"How much resistance allows 6V battery to produce a current of 0.006 amps?" it can be said that How much resistance that allows 6V battery to produce a current of 0.006 amps is
R=1000 ohms
From the Question we are told
How much resistance allows 6V battery to produce a current of 0.006 amps?
Generally the equation for Resistance mathematically given as
[tex]R=\frac{V}{I}\\\\\Therefore\\\\R=\frac{V}{I}\\\\R=\frac{6}{0.006}\\\\[/tex]
R=1000 ohms
Therefore
How much resistance that allows 6V battery to produce a current of 0.006 amps is
R=1000 ohms
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URGENT ANSWER ASAP PLEASE
What is the relationship between memory and learning? Memory and learning are the same process. Memory is more important than learning. Memory is the foundation of all learning. Memory outlasts learning
Answers
Answer:
learning and memory are very closely related concept . Learning is the acquisition of silk or knowledge, while memory is the expression of what you've acquired.Another difference is the speed with which the two things happen if you acquire the new skill or knowledge slowly and laboriously, that's learning
Answer: I took a test that had this question and the answer was Memory is the foundation of all learning. I hope this helps
1. A car has a mass of 400 kg and is driving down a hill at 2 m/s/s. What is the force of the car?
Answers
Answer:
l think the right answer is 4720
What is the voltage required to move 3A through three resistors (2ohms, 3ohms & 5ohms)?
Answers
Matching the following terms with their definitions.
Question 1 options:
Biomechanics
SMART Goal
Muscular Endurance
RDA
Aerobic
Isotonic contraction
Overload Principle
Static Stretch
Flexibility
Double Progressive System
Threshold of Training
Anaerobic
Exercise Physiology
Micro nutrients
Isometric contraction
Principle of Specificity
Quackery
Kinesiology
1 RM
Cardiorespiratory Endurance
Intensity
Macro Nutrients
Calorie
Dynamic Stretch
Physical Activity
1.
Using your joints fully through a wide range of motion without injury.
2.
Magnitude of virtuousness of a task.
3.
Movement using the large muscles, includes sports, dance, recreational activity.
4.
Focuses on how physical activity affects body systems.
5.
The most basic law of physical activity.
6.
Using your muscles many times without tiring.
7.
Branch of kinesiology that uses principles of physics.
8.
Performed slowly as far as you can without pain.
9.
Muscles exert force but do not cause movement of a joint.
10.
Muscle contraction that pulls on a bone and produces movement of a body part.
11.
Slow movement exercises designed to lengthen the muscles.
12.
Unit of energy or heat that describes the amount of energy in a food.
13.
Absolute strength
14.
The type of exercise you preform determines the type of benefits you receive.
15.
Minimum amount of nutrient necessary to meet the health needs of most people.
16.
Minimum amount of overload you need on order to build physical fitness.
17.
Physical activity that can be sustained for a long time because the body can supply enough oxygen.
18.
When you body cannot supply adequate oxygen to sustain it for a long time.
19.
The study of human movement.
20.
Carbohydrates, Fats, & Proteins
21.
Vitamins, minerals, & water
22.
Exercise for a long time without stopping.
23.
Specific, measurable, attainable, realistic, & timely.
24.
The most used method of applying the principle of progression.
25.
Advertising or selling that uses false claims.
Answers
Answer:
Explanation:
Biomechanics- The study of human movement.
SMART Goal- Specific, measurable, attainable, realistic, & timely - pay attention the how the words start this one was an easy giveaway
Muscular Endurance- Physical activity that can be sustained for a long time because the body can supply enough oxygen.
How long would a circuit be connected to produce a current of 0.65 A with a charge of 380 C?
Answers
Answer:
what grade are you dude
A Net Force Of 60 N Accelerates A 4-kg Mass Over A Distance Of 10 M.
A) What Is The Work Done By This Net Force?
B) What Is The Increase In Kinetic Energy Of The Mass?
Answers
Kinetic Energy = 600 J
(Work done) >> KE since there is no mention of frictional forces
The work done by the force sill be 600 joules and the increase in kinetic energy will be same as 600 joules.
What is Work done in Physics?Work done by a force is defined as the dot product of the force and the displacement caused by it. Mathematically -
W = F . d
W = |F| x |d| x cos Ф
Given is net Force Of 60 N that accelerates a 4 kg Mass Over A Distance of 10 meter.
We can calculate the work done by the formula discussed above. Therefore -
W = F . d
W = |F| x |d| x cos(0)
W = 60 x 10
W = 600 joules
Now, using the work - energy theorem, the change in kinetic energy is equal to work done. Therefore -
ΔE[K] = W = 600 joules
Therefore, the work done by the force sill be 600 joules and the increase in kinetic energy will be same as 600 joules.
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