Answer:
200km
Explanation:
Use the formula Distance = speed × time ( transpose the speed formula )
Also remember to converted the minutes into hour because the answer asked for it in Km do this by dividing by 60
What is the speed of the Curiosity Rover if it travels 10,000 ft. in 25 hours? *
400 m/s²
400 ft./hr
250,000 ft./hr
250,000 m/s²
A grocery shopper tosses a(n) 8.6 kg bag of rice into a stationary 18.1 kg grocery cart. The bag hits the cart with a horizontal speed of 5.2 m/s toward the front of the cart. What is the final speed of the cart and bag
Answer: 1.67 m/s
Explanation:
Given
Mass of bag is [tex]m=8.6\ kg[/tex]
Mass of cart is [tex]M=18.1\ kg[/tex]
bag hits the cart with horizontal speed of [tex]u=5.2\ m/s[/tex]
Suppose the system move with speed v after collision
Conserving the momentum
[tex]\Rightarrow mu+M(0)=(M+m)v\\\\\Rightarrow v=\dfrac{mu}{M+m}\\\\\Rightarrow v=\dfrac{8.6\times 5.2}{18.1+8.6}\\\\\Rightarrow v=1.67\ m/s[/tex]
4.) What determines a star brightness? *
a. Size
b. Temperature
c. Size & Temperature
d. Color & Temperature
A chemical plant produces ammonia using the following reaction. What
trade-off is made by running the reaction at a high temperature?
3H2 + N2 + 2NH3 + energy
O A. The higher temperature decreases the forward reaction rate, and
the pressure of the system is also lowered.
O B. The higher temperature increases the reaction rate, but it also
favors the reverse read on.
C. The higher temperature increases the forward reaction rate, and
the higher pressure increases the reaction rate.
D. The higher temperature decreases the reaction rate, but it also
favors the forward reaction.
Answer: B
Explanation: The higher temperature increases the reaction rate but also favors the reverse read on.
The higher temperature increases the reaction rate, but it also favors the reverse read on. So, option B.
What is meant by rate of a reaction ?The pace at which the products are created from the reactants in a chemical reaction is referred to as the rate of reaction.
Here,
Generally, reactions progress more quickly as the temperature rises.
The average kinetic energy of the reactant molecules will rise with a rise in temperature. The number of molecules having threshold energy rises, increasing the quantity of efficient collisions that actually occur.
Therefore, as the temperature of the reaction is increased, the rate of the reaction increases. But also favors the reverse reaction.
Hence,
The higher temperature increases the reaction rate, but it also favors the reverse read on.
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hello please help i’ll give brainliest
Answer:
Acceleration is defined as the rate of change of velocity
Explanation:
Its A
I need help please and thanks
Answer:
2. Given:
m=1000Kg
a=(9.8m/s)^2
F=m×a
=9.8×1000
=9800N
3.Given:
m=50kg
f=500N
F=m×a
500N=50Kg×a
50kg×a=500N
a=500÷50
a=(10m/s)^2
I. Complete with one of these phrasal verbs: hand back, take off, h
1. The plane
late because of the bad weather,
...... take off.....(complete)
In which of the follwing media sound travels fast ? A . oxygen B . copper C . sea water D . steel
sea water is the answer to your question
Answer:
Hey mate.....
Explanation:
This is ur answer.....
Sound travels faster in steel than in water. Similarly, sound travels faster in water than in air. This is because in solids, the distances between the molecules are closer and thus the atoms are more densely packed than in gases and liquids
Hope it helps!
Brainliest pls!
Follow me! :)
What do you think is the factor that causes projectile path to bend?
The movement of an object in a curved path toward the ground due to the application of a horizontal force and the downward force of gravity is projectile motion. The gravity is the factor that leads to bend of projectile path.
What is gravity?Gravity is the universal force of attraction that holds all matter together. It is by far the weakest known natural force and thus has no influence on the internal properties of everyday matter.
A projectile is an object whose main force is gravity. Because gravity is a downward force, it causes a projectile to accelerate downward.
Thus, the factor that causes projectile path to bend is gravity.
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what is the correct name for a bond between two phosphorus adtoms and three oxygen atoms
Covalent
Explanation:
Covalent Bond
Answer:
diphosphorus trioxide
Explanation:
A machine lifts a 35 kg object doing 6860 J worth of work. How much power is produced by the machine if it lifts the object in 4 seconds?
350 W
60025 W
27440 W
1715 W
Answer:
Explanation:
We need the power equation for this which is
P = Work/time
We have everything we need to solve this (the mass of the object is extra information):
P = 6860/4
P = 1715W
What would be the force required to accelerate an object that weighs 35 N up at a rate of .60 m/s^2?
Answer: [tex]2.14\ N[/tex]
Explanation:
Given
Force required to accelerate the object at the rate of [tex]0.6\ m/s^2[/tex]
The weight of the object is [tex]W=35\ N[/tex]
Mass of the object can be identified by dividing the weight by acceleration due to gravity
[tex]\Rightarrow m=\dfrac{W}{g}\\\\\Rightarrow m=\dfrac{35}{9.8}\\\\\Rightarrow m=3.57\ kg[/tex]
[tex]\therefore \text{Force F=}m\times a\\\Rightarrow F=3.57\times 0.6\\\Rightarrow F=2.14\ N[/tex]
Which of these planets is the odd one out based on their physical features?
a. Mars
b. Uranus
c. Jupiter
d. Neptune
Answer:
mars
Explanation:
the planet that is the odd is Mars
ohms Long describes the relationship between electronic current voltage and ___
Answer:
voltage ,current and resistance
Select the correct answer.
If you increase the frequency of a sound wave four times, what will happen to its speed?
OA
The speed will increase four times.
OB.
The speed will decrease four times.
The speed will remain the same.
OD.
The speed will increase twice.
O E.
The speed will decrease twice.
sound does not propagate through a vacuum why
Explanation:
Because, there is not atmosphere in vacuum. So, sound does not propagate through a vacuum.
1. PART A: Which statement describes the central idea of
the text?
Baseball from pitch to hits
The correct answer to this open question is the following.
Unfortunately, you did not attach the article or the text. You also forgot to attach the options for the question.
However, trying to help you we did some deep research and can comment on the following.
The statement that describes the central idea of the text is "Baseball can be explained and improved by collecting data and studying the natural laws at play in the sport."
You are referring to the article written by Stephen Ornes, of August 21, 2013, for Science News for Students.
The author refers to the idea that baseball and physics are related and can be understood through the "eyes" of science. Statistics bring interesting data to help understand the game.
And this idea is correct because today, baseball coaches and other sports coaches as is the case of football, use a series of statistics and data to better hire talent for their respective teams, as well as to better create plans and game strategies derived from the results and interpretation of data.
A 37 kg object has an applied force of 85N [R] acting on it. The coefficient of
kinetic friction is 0.17. Calculate the acceleration of the object and its displacement
after 3.4s if it’s initial velocity was 2.2 m/s
Answer:
Explanation:
This is quite tricky! You need to do 2 different equations to solve all the parts of this problem. First is finding the acceleration in one dimension, which has an equation of
F - f = ma
where F is the applied Friction,
f is the frictional force acting against F,
m is the mass of the object, and
a is the acceleration of the object (NOT the velocity!)
This is Newton's Second Law expanded on a bit. The sum of the forces working on an object is equal to the object's mass times its acceleration. We have F, but we need f which is found in the equation
f = μ[tex]F_n[/tex] which is the coefficient of kinetic friction times the weight of the object. Weight is found in the equation
w = mg where m is mass and g is the pull of gravity. Let's start there and work backwards:
w = 37(9.8) to 2 sig figs so
w = 360N. Now fill that in to find f:
f = (.17)(360) to 2 sig figs so
f = 61. Now for the final answer in the original equation way back up at the top:
85 - 61 = 37a and do the subtraction on the left side first:
24 = 37a and then we divide to 2 sig figs to get
a = .65 m/s/s
Since we are moving in a straight line (as opposed to on an angle) the displacement is found in
d = rt which simply says that the distance an object moves is equal to its rate times the time. Therefore,
d = 2.2(3.4) to 2 sig figs so
d = 7.5 m
Which of the following best describes what is “relative” in the theories of relativity?
a. Measurements of time and motion change relative to their frame of reference.
b. Everything is relative.
c. The speed of light is relative.
d. Antimatter twins are relatives.
Answer:
Explanation:
B
for every 100 joules or useful energy output, the heater wastes 100 joules, find the input energy of the heater.
8. The mediator particle for gravitational force is on
(1 Point)
gluon
vector boson
photon
gravitone
Answer:
Gravitone
Explanation:
In theories of quantum gravity, the graviton is the hypothetical quantum of gravity, an elementary particle that mediates the force of gravity. There is no complete quantum field theory of gravitons due to an outstanding mathematical problem with renormalization in general relativity.
Which of the following are states of matter?
A. Liquid
B. Solid
C. Mixture
D. Gas
E. Compound
Answer:
There are four natural states of matter: Solids , liquids, gases and plasma. The fifth state is the man-made Bose-Einstein condensates. In a solid, particles are packed tightly together, so they don't move much.
Explanation:
An object is moving at 4.66 m/s when it accelerates at 5.66 m/s2 for a period of 2.35 s. The distance it moves in this time is ____ m.
Answer:
S = 26.58 meters
Explanation:
Given the following data;
Initial velocity = 4.66 m/s
Acceleration = 5.66 m/s²
Time = 2.35 seconds
To find the distance travelled by the object, we would use the second equation of motion;
S = ut + ½at²
Where;
S represents the displacement or height measured in meters.
u represents the initial velocity measured in meters per seconds.
t represents the time measured in seconds.
a represents acceleration measured in meters per seconds square.
Substituting into the equation, we have;
S = 4.66*2.35 + ½*5.66*2.35²
S = 10.951 + (2.83 * 5.5225)
S = 10.951 + 15.629
S = 26.58 meters
8. What kind of information do black hole detectors not provide?
A. precise timing
B. specific positional information
C. photon intensity
D. power of a black hole
You’ve probably seen how the surface of a tire can partially melt and leave a mark on the road when a car’s brakes are applied really hard. Explain why the surface of the tire melts.
Answer:
The friction of braking heats up the tire and the road. The temperature is so high that it reaches the melting point of the rubber in the tire. The melting rubber is what leaves a mark on the road.
Explanation:
Answer:
the friction of braking heats up the tires and the road. then the temperature gets even hotter to the point where it melts the rubber.
Explanation:
this is my answer so be careful how you copy it, but you've got this guys schools is almost out stay strong an have fun and be safe this summer keep pushing <33.
remember you're loved by many
- Jason Edwards 5/15/23
before each item.
1. Which of the following refers to chemical digestion?
A. Chewing of food B.. Grinding of food C. Tearing of food D. Amylase in the saliva
2. In what organ most of the absorption process happen?
A. Stomach B. Small intestine C. Large intestine D. Esophagus
3. It is a digestive disorder wherein the body has the inability to digest sugar?
A. Gastritis B. Lactose intolerance
C. Diarrhea D. Peptic ulcer
4. The following are part of the digestion process EXCEPT
A. ingestion B. assimilation
C. excretion D. respiration
5. It helps to moisten the food and contains the enzyme amylase.
A. Saliva
B. Stomach C. Mouth D. Teeth
6. It is a process of taking in digested food nutrients into the cell by providing new protoplasm and energy
needed during the cell activities.
A. Ingestion B. assimilation C. Absorption D. Excretion
7. What causes constipation?
A. Lack of fiber in the body B. Uncontrolled growth of abnormal cells
C. Lack of enzyme lactase D. Excessive consumption of coffee and acidic drinks
8. The nutrients from the digested food are being absorbed by the following processes except
A. passive diffusion B. facilitated diffusion C. active transport D. ingestion
9. It is the organ that is responsible for reabsorbing water and minerals that are not digested in the small
intestine.
A. Stomach B. Large intestine C. Small intestine
D. Esophagus
10. The following are the reasons why digested food should be assimilated into the cell EXCEPT
A. they are converted into protoplasm. C. they provide energy needed in cell activities
B. they are needed to store fats. D. they are converted to build cell membranes
11. What is the best treatment for a person who suffers lactose intolerance?
A. Take antibiotics
B. Balanced diet
C. Take lactase supplements before eating food contains dairy D. Practice healthy lifestyle
12. What happen during the assimilation process?
A. Absorbed nutrients are delivered into the cell
B. Breaking down of food into tiny pieces
C. Elimination of waste product of the digestion process D. Absorption of nutrients from the digested food
13. How does the enzyme amylase help in the absorption of nutrients?
A. It helps in the digestion of proteins.
B. It helps in the digestion of fats.
C. It helps in the digestion of carbohydrates. D. It helps in the digestion of lipids.
14. It is characterized as loose bowel caused by an infection of bacteria that we get from the food we eat.
D. GERD
A. Diarrhea
C. Gastritis
B. Peptic Ulcer
15. How saliva helps in the digestion process?
A. It reabsorbs nutrients from the food we eat.
B. It contains the enzyme amylase that helps in the digestion of starch.
C. It absorbs nutrients and distribute it in the bloodstream.
D. All of the above
16. How colon cancers can be treated?
B. By exercising
A. By eating foods rich in fiber
D. By undergoing surgeries.
g C. By taking lactase supplements
Answer:
1:D
2:B
3:B
4:D
5:A
13:A
14:A
15:B
16:A
7:A
9:B
8:B
11:C
12:A
Explanation:
Sorry for incomplete answers
An attractive force of |1N| exists between two charged particles. The magnitude of both charges is the same. If the particles are 0.25m apart what is the value and sign of the charge for both particles.
A. (- 2.6x10-6 C) and (+ 2.6x10-6 C)
B. (+ 2.7x10-11 C) and (- 2.7x10-11 C)
C. (- 5.27x10-6 C) and (+ 5.27x10-6 C)
D. (- 6.94x10-12 C) and (- 6.94x10-12 C)
Answer:
A: -2.6 × 10^(-6) C and 2.6 × 10^(-6) C
Explanation:
According to coulombs law, the formula for the force between 2 charged particles is;
F = kq1•q2/r²
Where;
F is Force = |1N|
q1 and q2 are the charges of both particles
k is coulombs constant = 9 × 10^(9) N.m²/C²
r is distance between particles = 0.25
Now, the force |1N| means -1 or +1
Thus;
-1 = 9 × 10^(9) × q1•q2/(0.25)²
Or
1 = 9 × 10^(9) × q1•q2/(0.25)²
Thus;
q1•q2 = -6.94 × 10^(-12)
Or q1•q2 = 6.94 × 10^(-12)
Now, we are told that the magnitude of both charges are the same.
Thus;
q² = 6.94 × 10^(-12)
q = √(6.94 × 10^(-12))
q = 2.6 × 10^(-6) C
Since from earlier, we saw that;
q1•q2 = -6.94 × 10^(-12)
Or q1•q2 = 6.94 × 10^(-12)
Thus means that one of the charges will be negative while the other will be positive.
Thus, the charges are;
-2.6 × 10^(-6) C and 2.6 × 10^(-6) C
Around the turn of the twentieth century, inventor Robert Shuman was engineering products that used energy directly from the Sun to power motors and farms. He stated that coal and oil would eventually run out and that humans needed to learn how to use the more-abundant energy resource of the Sun. During which stage of technological design did Shuman identify that using oil and coal would be a problem? first second third fourth
Answer: First stage
Explanation:
The four stages of technological design include:
• identifying a problem.
• Designing a solution.
• Implement, build, and test the design.
• Determine if solution met the need.
In this scenario, Robert Shuman identified the problem. This was depicted as he stated that coal and oil would eventually run out and that humans needed to learn how to use the more-abundant energy resource of the Sun,
A 3.00 x 10-2-kg block is resting on a horizontal frictionless surface and is attached to a horizontal spring whose spring constant is 124 N/m. The block is shoved parallel to the spring axis and is given an initial speed of 11.9 m/s, while the spring is initially unstrained. What is the amplitude of the resulting simple harmonic motion
Answer:
[tex]A=0.185m[/tex]
Explanation:
From the question we are told that
Mass of Block [tex]M=3*10^-2kg[/tex]
Spring constant [tex]\mu=124 N/m[/tex]
Initial Speed [tex]V_1=11.9m/s[/tex]
Generally the equation for Kinetic Energy is mathematically given by
[tex]K.E=1/2 mv^2[/tex]
Therefore
[tex]K.E_1=1/2*0.03*11.9^2[/tex]
[tex]K.E_1=2.12J[/tex]
Where
[tex]Initial K.E_1=Final K.E[/tex]
Generally the equation for Final Energy stored is mathematically given by
[tex]K.E_2=0.5\mu a^2[/tex]
Therefore
[tex]K.E_1=K.E_2[/tex]
[tex]0.5\mu A^2=2.12J[/tex]
[tex]A=\sqrt{\frac{2.12}{0.5*124}}[/tex]
[tex]A=0.185m[/tex]
Therefore the amplitude of the resulting simple harmonic motion is
[tex]A=0.185m[/tex]
What is the density of the metal
Answer:
Density is the mass per unit volume of that metal.
Explanation:
[tex]density = \frac{mass}{volume} [/tex]