Answer:
I=U/R
Explanation:
What is the mass of the object if it has a density of 657 g/mL and a volume of 32 mL?
Show work!
Answer:
The answer is 21024g/mL
Explanation:
Multiply 657 by 32:
657
× 32
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
21024
↳ 21024 g/mL
Refer to the following illustration to answer this question.
Waves
To measure one wavelength, you would measure the distance between __________.
Question 16 options:
D and B
C and A
A and B
C and F
Answer:
C and E
Explanation:
The wavelength of a transverse wave can be measured as the distance between two adjacent crests. The wavelength of a longitudinal wave can be measured as the distance between two adjacent compressions. Short-wavelength waves have more energy than long-wavelength waves of the same amplitude.
transivity, reflexivity, and identity refer to what kind of reasoning?
Deductive reasoning. Deductive reasoning implies the use of a given set of facts or data to deduce other facts, by reasoning logically. It rearranges information that is already known into new statements or truths. Hence transitivity, reflexivity, and identity refer to it and are necessary elements.
What are deductive reasoning and examples?Deductive reasoning is a type of deduction used in science and in life. It is when you take two true statements, or premises, to form a conclusion. For example, A is equal to B. B is also equal to C. Given those two statements, you can conclude A is equal to C using deductive reasoning.
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Hunger and thirst are examples of external stimulus true or false
Hunger and thirst are examples of external stimulus true or false
false External stimulus. The external stimulus includes touch and pain, vision, smell, taste, sound, and balance (equilibrium)
The moon goes around the Earth at an approximately constant speed, but not at a constant velocity. What difference would it make if it went in a constant velocity? Why doesn't it do so?
A group of students is investigating whether wheels affect the force of friction. The students push two boxes each with the same force on a table. One box has wheels and the
other does not have wheels. The distance traveled by each box is shown.
Experimental Observations
Student 1 Student 2 Student 3 Student 4
Distance traveled by box with wheels
24 cm
22 cm
20 cm
23 cm
Distance traveled by box without wheels
12 cm
14 cm
15 cm
13 cm
Which step should the students take next?
Make a hypothesis
Test another variable
Analyze the results
Share their conclusion
Suppose you apply a force of 75 N to a 25-kg object. What will the acceleration of the object b? (Remember a=F/m)
25 m/s2
3 m/s²
225 m/s2
25N
k12 schools help me
I would choose the option B.
F = ma
a = 75 / 25 = 3 m/s^2
The acceleration of the given object will be equal to 3 m/s². Therefore, option (B) is correct.
What is acceleration?Acceleration of an object can be explained as the change in the velocity of an object with respect to time. The acceleration is a vector quantity as it exhibits magnitude and direction. Acceleration can be calculated from the 2nd derivative of the position of the object w.r.t. time.
The force is the product of the mass and acceleration, according to Newton's second law of motion.
F = ma
And, a = F/m
From the above formula, we ca say that the acceleration is inversely proportional to mass.
Given, the force acting on the object, F = 75 N
The mass of the object, m = 25.0 Kg
The acceleration of the given object, a = 75/25 =3 m/s²
Therefore, the acceleration of the object is equal to 3 m/s².
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9. A car of 1200 kg is rolling down a hill. When the car reaches a momentum of 7800 kg
m/s, what is its velocity?
Answer:
V = p/m = 7800/1200 = 6.5m/s
Explanation:
explique o que você da frase:"não somos seres humanos passando por uma experiência espiritual... somos seres espirituais passando por uma experiência humana
Answer:
Talvez o que ele quis dizer é que tudo o que temos não é nosso, mas de Deus, e o que fazemos é saber como será estar vivo
how to find total internal reflection
(c) Total internal reflection occurs
when the incident angle is greater than the critical angle.
n1 sin θ1 = n2 sin θ2. n1 sin θ1 = n2.hope it helpsAn object has an acceleration of 18.0 m/s/s. If the net force
was tripled and the mass were halved, then the new
acceleration would be m/s/s.
Answer:
Force = mass × acceleration
[tex]{ \boxed{ \rm{F = ma}}}[/tex]
• For the first case;
[tex]{ \tt{F = 18m}}[/tex]
• For the second case;
[tex]{ \tt{3F = \frac{1}{2} m \times a}} \\ \\ { \tt{F = \frac{1}{6}m \times \frac{1}{3}a }}[/tex]
Then equate the equations:
[tex]{ \tt{18m = \frac{1}{6} m \times \frac{1}{3}a }} \\ \\ { \tt{18 = \frac{1}{3} ( \frac{1}{2} \times a)}} \\ \\ { \tt{54 = \frac{a}{2} }} \\ \\ { \boxed{ \mathfrak{answer{ : \rm {a = 98 \: m {s}^{ - 1} }}}}}[/tex]
Câu hỏi: Một bộ acquy có thể cung cấp một dòng điện 2 A liên tục trong 1 giờ thì phải nạp lại. Cường độ dòng điện mà acquy này có thể cung cấp nếu nó được sử dụng liên tục trong 5 giờ thì phải nạp lại là
0,4 A.
2,5 A.
2 A.
10 A.
Answer:
I don't understand anything get it or what
Thea uses a hairdryer to dry her hair. The hairdryer has an efficiency of 0.5 and the total input energy is 180 kJ. How much of the energy supplied is wasted? Give your answer in joules
90kJ of the energy supplied to the hair dryer is wasted.
Efficiency is the ratio of output to input. It is given by:
Efficiency = output / input
Given an efficiency of 0.5 and the total input energy is 180 kJ. Hence:
Efficiency = output / input
0.5 = output / 180 kJ
Output = 90 kJ
Amount of wasted energy = Input - output = 180kJ - 90kJ = 90kJ
Therefore 90kJ of the energy supplied is wasted.
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A chemical lab isolates a gaseous element from the atmosphere that does not form chemical compounds. In which group of the periodic table is this element most likely found?
A. 18
B. 17
C. 1
D. 2
Answer:
A- 18
Explanation:
It wont let me explain how
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
The brain itself does not contain nerves. How is it part of the central nervous system?
A.
It sends the signals out to the nerves.
B.
It is not—it is part of the endocrine system.
C.
Only parts of the body that move have nerves.
D.
It is a central part of the body, so it is in that system.
PLEASE NO LINKS OR I WILL REPORT YOU
The brain is part of the central nervous system because it sends the signals out to the nerves.
option A.
What is central nervous system?
The central nervous system is made up of the brain and spinal cord.
The brain controls how we think, learn, move, and feel.
The spinal cord carries messages back and forth between the brain and the nerves that run throughout the body.
Thus, we can conclude that the brain itself does not contain nerves, but it sends the signals out to the nerves hence it is part of the central nervous system.
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A 2.0 x 10^3 kg car moves down a level highway under the actions of two forces. One is a 1140 N forward force exerted on the wheels by the road. The other is a 950 N resistive force exerted on the car by the air. Use the work-kinetic energy theorem to find the speed of the car after it has moved a distance of 20.0 m, assuming the car starts from rest.
Answer:
Speed of the car after it has moved a distance of 20m is 3.8 m/s
Explanation:
Mass of car is M = 2000 kg
Forces acting on car are:
Force F₁ = 1140 N forward force exerted on drive wheels by the road
Force F₂ = 950 N a resistive force
Distance moved by the car is s = 20m , after starting from rest
Work done, W = F₁ * s - F₂ * s
W = 1140 * 20 - 950 * 20 = 3800J
Assuming kinetic energy conservation is work done
W = KEf - KEi
Where KEf = final kinetic energy
KEi = initial kinetic energy which = 0 (since starting from rest)
Hence, W = 3800J = KEf = 1÷2MV²f
Vf = final velocity = 2 * 3800 ÷ 2000 = 3.8 (m/s)²
Vf = 3.8 m/s
Speed of the car after it has moved a distance of 20m is 3.8 m/s
Which evidence did Wegener use to develop the theory of continental drift?
Similar fossils were found on different continents.
The climate of Siberia has always been the same.
There is no evidence of glaciers anywhere in South America.
The Rocky Mountains are taller than the Appalachian Mountains.
Answer:
your answer is There is no evidence of glaciers anywhere in South America.
have a good day!
Explanation:
Answer: C
Explanation: i took the test so its correct :)
Describe what it means to view something from a frame of reference.Give an example to illustrate your explanation.
like just try and try you gut it just trust me I'm a Wuman and you a man
are dimensionless quantities always unitless
Important thing is that all unitless quantity is dimensionless quantity. .A dimensionless physical quantity may have an unit
just need to know net force, unbalanced or balanced and accelerated or not accelerated :)
Answer:
9. forces: BALANCED, object will: NOT ACCELERATE
10. Forces: UNBALANCED, object will: ACCELERATE
Explanation: sorry I don't no the net force but hope this helps for know
How does alpha particles transfer energy to their surroundings?
At what distance will the weight of a body be halved , Earth's radius=6.4×10^6
A body of mass m has weight
F = GMm/r²
on the surface of the Earth, where G is the universal gravitational constant, M is the mass of the Earth, and r is it's radius.
If the weight is to be halved, then we have
1/2 F = 1/2 GMm/r² = (1/√2)² GMm/r² = GMm/(√2 r²)
so the distance between the body and the planet's center needs to be
√2 × 6.4 × 10⁶ m ≈ 9.1 × 10⁶ m
If a ball is thrown from a tall building, how tall is the building if it takes 4s for the ball to land.
Let’s assume that we can ignore the resistance of the air (as one usual does in physics homework).
The distance ‘s’ traveled by an object under constant acceleration ‘a’ in a time ‘t’ is given by
s = 1/2 a t^2
if the object starts at rest. As t=4 seconds and ‘a’ is the usual 9.81 m/s^2, you can put the numbers in and get
s=8*9.81 m ~78.5m or 78 500 cm
A foot amounts to (as you know) 30.3 cm, so you have to divide the above number by the 30.3cm/ft and get
s ~ 257 ft.
Explanation:
The air in a tire pump has a volume of 1.5 L at a temperature of 5 ℃. If the temperature is increased to 25 ℃ and the pressure remains constant, what is the new volume of the tire pump
Answer:
Explanation:
5 C = 278 K
25 C = 298 K
V1 / T1 = V2 / T2
1.5L / 278 K = V2 / 298 K
V2 = (1.5L * 298) / 278
V2 = 1.61 L
the diagram shows a duck swimming in a stream in the opposite direction the stream is flowing. The duck pushes against the water, so the water pushes the duck forward with 20 newtons of force. the water also exerts 15 newtons of resistive force against the duck. Which statement best describes the resulting motion of the duck?
The resulting motion of the duck is best described by this statement: C. The duck will continue moving in its current direction.
Motion can be defined as a change in the position (location) of an object or physical body such as a duck, with respect to a reference point.
This ultimately implies that, motion only take place due to a change in position (location) of an object with respect to a frame of reference or reference point i.e the stationary position where an object was standing before the effect of an external force.
Given the following data:
Forward force = 20 Newton.
Resistive force = 15 Newton.From the data given, we can deduce that the forward force (20 Newton) is greater than the resistive force (15 Newton) and as such the duck will continue to move in the current direction (forward).
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Your question is lacking the necessary answer options, so I will be adding them here:
A. The duck will stop moving.
B. The duck will stop and then start moving again.
C. The duck will continue moving in its current direction.
D. The duck will move in the direction that the stream is flowing.
You receive a generic email notification about an issue with the delivery of a recent order. You’re instructed to click on a link included in the email for further information about the order. When you click, it opens a webpage which asks for your account username and password before you can view the information. Which of the following is the biggest red flag in this scenario?
A. There is an issue while delivering your order.
B. The email you received was a generic notification.
C. The information about the delivery problems is not contained in the email.
D. Your username and password are required to view the information.
Answer: C. The information about the delivery problems is not contained in the email.
Explanation: please give brainliest
The moment the skateboard starts moving (after skateboarder pushes it). Which of Newton's laws is most relevant to this action?
Answer:
The law of gravity
Explanation:
NEED HELP!!! ANSWER THESE 5 QUESTIONS FOR 25 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINLIEST
1. Therese plays lacrosse, but she has injured her ankle and has to take a few weeks off. She is finding that she has a lot of trouble sleeping since she is no longer practicing several days a week. What BEST explains this?
A.
She needs regular exercise to move oxygen through the blood.
B.
She clearly requires more exercise than most people to relieve stress.
C.
She is not releasing the endorphins that she used to, and that impacts her sleep.
D.
She is likely not maintaining the healthy habits that she did when she was practicing.
2. Imagine that you are running and want to track your heart rate. What is the easiest way to do this?
A.
Check your pulse at the wrist or neck.
B.
It can’t be done without special equipment.
C.
Close your eyes and count to 30 very slowly.
D.
Take off your shoe and check the top of your foot.
3. Guillermo has decided that he wants to be healthier, so he starts jogging. He has been at it for a week, but he is getting frustrated because he cannot run very far without getting out of breath. He is beginning to think that this is not a good exercise for him since he is not very good at it. What BEST explains why Guillermo is struggling?
A.
He probably does not have good form when he is exercising.
B.
He likely has heart or lung problems that he was not aware of.
C.
He does not have much endurance since he is new to exercise.
D.
He is just not good at jogging and needs to try something else.
4. Li Wei loves cardio and finds it very easy to fit into his schedule. Because he knows it is important to diversify his exercise routine, sometimes he runs and other days he rides his bike. What else should Li Wei consider regarding his routine?
A.
He should add some strength training.
B.
He needs to add one more form of cardio.
C.
He has too much cardio and should cut half of it.
D.
His program works for him, so he should not change it.
5. Jamar has decided that he is going to train for a marathon. He knows that it will take a lot of training, and that he will need to build his muscles. What part of the muscle does he need to build?
A.
oxygen levels
B.
fast twitch fiber
C.
slow twitch fibers
D.
large muscle mass
PLEASE NO LINKS
Answer:
1.A
2.C
3.A
4.B
5.D
Explanation:
CORRECT ME IF IM WRONG
Is the daughter or the science teacher correct? And why?
Answer:
The daughter. I can't really explain but practically, it happens as the daughter has stated.
what is this it tastes sour
A. diamond
B. sugar
C. salt
D. cinnamon
Answer:
salt
Explanation:
it comes from sea water
Answer:
Salt
Explanation:
It’s not cinnamon ( I know because if the picture)
it’s not sugar (sugar is sweet not sour)
IT MIGHT BE SALT (it’s salt)
its nit diamond (diamond doesn’t have a taste?)
