Answers
Answer:
m uncertainty percentage :
+- 2.5
+- 7.5
+- 12 5
+- 17.5
+- 25
+- 30
M uncertainty percentage = 16.5
m + M uncertainty percentage;
+- 19
+- 24
+- 29
+-34
+- 41.5
+- 46.5
ex 50 × 5 ÷100 = 2.5
Related Questions
This graph shows that as an object's mass increases its
es )
A)
inertia increases.
B)
inertia decreases.
acceleration increases.
D)
acceleration decreases.
Answers
Answer:
(A) inertia increases.
Explanation:
Inertia is the property of mass that resists change so the mass an object has the greater the inertia
A force is applied to a box for 6.10s causing the 5.20kg box to come to accelerate from rest to 2.80m/s. What was the force on the box?
Answers
Explanation:
f = ma
m = 5.2kg
u = 0
V= 2.80m/s
t = 6.10s
a =(2.8- 0)/6.10
a = 2.8/6.10
a = 0.46m/s²
f = 5.2 X 0.46 =2.392N
f = 2.392N
This is the location of an object.
Answers
Yes. This is indeed the location of an object.
Answer:
wdym
Explanation:
not much information
If a 0.8 kg object hanging from a spring stretches it by 0.55 m, then by how much will the spring be stretched (in m) if a 1.6 kg object is suspended from it?
Answers
. State two ways in which the molecular structure of a liquid is different from the molecular structure of a solid.
Answers
●Liquid
The intermolecular attractive forces are not as strong as solids.The attractive forces are also not strong enough to keep neighbouring molecules in a fixed position. So the molecules are free to move over neighbouring.●Solid
The intermolecular forces between neighboring molecules are strong enough to keep them locked in position.Due to the strong intermolecular forces between neighboring molecules, solids are rigid.Help me write this three paragraph Physics essay. I'll Venmo you, give me asking price.
Answers
Answer:
Physics, or the study of matter, energy, and the interactions between them, helps us to understand the laws and rules that govern the physical world. Not every student will grow up and study physics on a deeper level, but everyone uses basic physics concepts to navigate everyday life.A
Physics is a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the study of nature in an attempt to understand how the universe behaves.Physics helps you to understand the world around you, and satisfy your curiosity. Studying physics develops your critical thinking and problem-solving skills. Physicists are versatile, which opens a wide range of future careers.
The figure above shows 4forces 3N, 10N, 3√3N, and 6N acting on a particle P. The resultant of the four forces is.
Answers
As you gave no pic I took them on one lined
F_1=3NF_2=10NF_3=3root 3 NF_4=6N[tex]\\ \sf\longmapsto F_{net}=F_1+F_2\dots[/tex]
[tex]\\ \sf\longmapsto F_{net}=3+10+6+3\sqrt{3}[/tex]
[tex]\\ \sf\longmapsto F_{net}=19+3(1.732)[/tex]
[tex]\\ \sf\longmapsto F_{net}=19+5.196[/tex]
[tex]\\ \sf\longmapsto F_{net}=24.196N[/tex]
A 1150 kg car is on a 8.70° hill. Using X-Y axes tilted down the plane, what is the y-component of the weight? (Unit = N)
Answers
Answer:
Explanation:
Assuming the x axis lies along the slope.
Fy = mgcosθ = 1150(9.81)cos8.70 = 11,151.6937... = 11.2 kN
How much net force is required to accelerate a 10 kg mass at 1.5 m/s2?
Answers
Answer:
F = 15N
Explanation:
The explanation is on the above photo.
convert .54g to dekagrams. NEED HELP!!!!!!
Answers
Answer:
.54 grams = .054 dekagrams
Explanation:
Mary finishes a marathon at a speed of 2 m/s. If her
acceleration period is 4 seconds, then what is her average
acceleration (in m/s?)?
Answers
Explanation:
v2 = v1 + at
v2 final speed
v1 initial speed
a acceleration
t time
2 = 0 + 4 a
a = 1/2
Which action would a physicist most likely take to determine the amount
energy the could be released if an earthquake occurs at fault?
A. Interview people who hake experienced major earthquakes
B. Design tests to measure and compare the energy released by
earthquakes
C. Read historical articles about the effects of past earthquakes
D. Design buildings that can withstand the energy released by
earthquakes
SUBMIT
Answers
Answer:
B. Design tests to measure and compare the energy released by
earthquakes
A car slows down from 27.7 m/s
to 10.9 m/s in 2.37 s.
What is its acceleration?
Answers
Answer:
- 7.088 m/s²
Explanation:
As we know that,
★ Acceleration = Change in velocity/Time
→ a = (v - u)/t
Here,
Initial velocity (u) = 27.7 m/sFinal velocity (v) = 10.9 m/s→ a = (10.9 m/s - 27.7 m/s)/2.37 s
→ a = -16.8/2.37 m/s²
→ a = -7.088 m/s² [Answer]
Negative sign denotes that the velocity is decreasing.
Answer:
[tex]\boxed {\boxed {\sf -7.09 \ m/s^2}}[/tex]
Explanation:
We are asked to find the acceleration of a car. Acceleration is the change in velocity with respect to time. We will use the following formula:
[tex]a= \frac {v_f-v_i}{t}[/tex]
In this formula, [tex]v_f[/tex] is the final velocity, [tex]v_i[/tex] is the initial velocity, and [tex]t[/tex] is the time. The car slows down from 27.7 meters per second to 10.9 meters per second in 2.37 seconds. Therefore:
[tex]v_f[/tex]= 10.9 m/s [tex]v_i[/tex]= 27.7 m/s [tex]t[/tex]= 2.37 sSubstitute the values into the formula.
[tex]a= \frac{ 10.9 m/s-27.7 m/s}{2.37 \ s}[/tex]
Solve the numerator.
10.9 m/s - 27.7 m/s= -16.8 m/s[tex]a= \frac{-16.8 \ m/s}{2.37 \ s}[/tex]
Divide.
[tex]a= -7.088607595 \ m/s/s[/tex]
[tex]a= -7.088607595 \ m/s^2[/tex]
The original measurements of velocity and time have 3 significant figures, so our answer must have the same. For the number we found, that is the hundredth place. The 8 in the thousandth place tells us to round the 8 in the hundredth place up to a 9.
[tex]a \approx - 7.09 \ m/s^2[/tex]
The acceleration of the car is approximately -7.09 meters per second squared. The acceleration is negative because the car is slowing down.
Warm air is more dense than cool air. Warm air is less dense than cool air Warm air and cool air have the same density
Answers
Answer:
You are exactly right. The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less
8. A circuit has a 9.0 V battery and 549 mA of current. What is the resistance of the circuit?*
R=
32
*Round your answer to the nearest thousandth if necessarł.
Answers
Answer:
Explanation:
E = IR
R = E/I
R = 9.0/0.549
R = 16.393 Ω
A car moves at 20 m s' for 15 minutes. Calculate the distance travelled
Answers
Explanation:
Calculating this according to the m/s rate
Now solving the question
If the car goes 20 m/s mathematically we can generate it as
15 × 60 = 600 secs
If the car goes 20 meters per every second it means
The car will go 20 meters for 900 secs
Which is 900 ×20 = 18000m/s
=18000÷1000 = 1km
Therefore the answer is 18km
The heating element of an electric oven is designed to produce 3.9 kW of heat when connected to a 240-V source. What must be the resistance of the element?5)A 120-V hair dryer has two settings: 950 W and 1400 W .a) Determine the resistance at 950 W setting.b) Determine the resistance at 1400 W setting.
Answers
The heating element of an electric oven is designed to produce 3.9 kW of heat when connected to a 240-V source. Then the resistance of the element is 14.7Ω
When A 120-V hair dryer has two settings: 950 W and 1400 W then the resistance at 950 W is 15.15Ω and at 1400 W is 10.28Ω.
What is Electric Power ?The pace at which electrical energy is transmitted by an electric circuit is referred to as its power. The watt is the SI unit of power, equal to one joule per second. Watts, like other SI units, have standard prefixes: thousands, millions, and billions of watts are referred to as kilowatts, megawatts, and gigawatts, respectively.
It is a popular misperception that electric power is purchased and sold, whereas electrical energy is. Electricity, for example, is sold to users in kilowatt-hours (kilowatts multiplied by hours), because energy is defined as power multiplied by time.
In this problem,
Given,
Power P = 3.9 KW
Voltage V = 240 V
P = V²/R
3.9 × 10³ = 240²/R
R = 240²/3.9 × 10³
R = 14.7Ω
For hair dryer,
given,
P = 950 W or 1400 W
V = 120 V
P = V²/R
950 = 120²/R
R = 120²/950
R = 15.15Ω
P = V²/R
1400= 120²/R
R = 120²/1400
R = 10.28Ω
To know more about Power :
https://brainly.com/question/29575208
#SPJ2.
A physics student solving a physics problem has obtained the following four equations that describe the physics of a system of masses connected:
1. m2 = 3m1
2. --mig cosθ + T= miai
3. a1 = a2
4. m2g-T=m2a2
where g = 9.80 meter/ second^2 and θ = 60° are knowns, and mı, m2, a1, a2, and T are unknowns.
a. The problem requires the student to evaluate which are the unknowns that the student would like to eliminate from the equations?
b. The student decides to eliminate the unknown m2. Which two of the equations can be used to eliminate m2?
Answers
Answer: m1, m2, a1, T
Explanation:
Help pls, see picture. Will mark Brainliest
Answers
Answer:
B
Explanation:
the graph shows the line going up (accelerating) and it isn't curving like d so it doesn't stop accelerating
Hope this helps :)
You are taking a turn at 30.0 m/s on a ramp of radius 25.0 m. What is your acceleration?
Answers
Acceleration = v^2 / r
Acceleration = 30^2/25
Acceleration = 900/25
Acceleration = 36 m/s^2
write two differences between practical machine and ideal machine
Answers
Answer:
Ideal machines are said to have parts which are weightless , frictionless and strings if any are inextensible. Practical machines have parts which have weights, friction and it causes some loss of work done. So these are the differences between Ideal Machine and Practical Machines.
atoms are composed of several basic types of very small ____; the ____ of each of these particles gives a different kinds of atoms so unique identity
Answers
Answer:
An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms combine to form molecules, which then interact to form solids, gases, or liquids. For example, water is composed of hydrogen and oxygen atoms that have combined to form water molecules. Many biological processes are devoted to breaking down molecules into their component atoms so they can be reassembled into a more useful molecule.
Atomic Particles
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.
The hydrogen atom (H) contains only one proton, one electron, and no neutrons. This can be determined using the atomic number and the mass number of the element (see the concept on atomic numbers and mass numbers).
What is LCR circuit??
Answers
An LCR circuit is a circuit which has Inductors , Capacitor and Resistors connected to each other in an specific way.
An RLC circuit is an electrical circuit consisting of a resistor, an inductor, and a capacitor, connected in series or in parallel. The name of the circuit is derived from the letters that are used to denote the constituent components of this circuit, where the sequence of the components may vary from RLC.
What makes a good scientific question? (1 point)
o It helps decide the right choice in a situation.
o It directs how to apply knowledge.
O It is answered by observation and evidence.
O It is outside the bounds of natural phenomena.
Answers
C. It is answered by observation and evidence.
Good scientific explanations are defined, measurable and controllable. They can be answered by an experiment.
Brown is currently producing only corn; if he wants to produce some tobacco, in what order would he switch his fields from corn to tobacco production? What law does this represent? Explain.
Answers
Hello some data related to your question is missing attached below is the missing data
From the Table If Brown produces only Corn he will produce 50 but to produce some tobacco Brown will produce 40 Corn and 10 Tobacco to ensure the efficiency of production.
PPF ( production possibility frontier ) is a curve that shows/represent the production of various quantities of two(2) different commodities with the same limited amount of resource. In PPF the efficiency of production is not affected because the Increase in the production of a certain commodity will be balanced with a decrease in production of the other commodity. and The slope of PPF is the Marginal rate of transformation. and opportunity cost is kept constant.
Learn more : https://brainly.com/question/14482480
A particle is projected from a point on a horizontal plane and has an initial velocity of 28root 3 m/s at an angle of 60 degree .find the greatest heights reached by the particle
Answers
Answer:
uujjjjjctc7tox7txr9ll8rz8lr5xl8r6l8dl85x8rl5x8rl5x8rl5xrx8l58rk5xr8l5xr6l8xr68lc
A vehicle starts from rest and travels 50 m in 5 s. What is its acceleration?
Answers
Object X is attracted to object Y. If object Y is negatively charged, what can you say about object X? (a) It is positively charged (b) It is negatively charged (c) It is electrically neutral (d) Object X may be positively charged, but it is possible it is also electrically neutral with an induced charge separation
Answers
Answer:
a) Object X is positively charged
Explanation:
Unlike charges attract each other
Like charges repel each other
The object X will be positively charged through charging by conduction.
The given parameters:
Object Y = positively chargeA charge can be produced by conduction. This method of charge generation involves charging a neutral body by placing it in contact charged body.
When object X is placed in contact with object Y, which is negatively charged, the negative charges of object Y repels negative charges of object X. This leaves object X with excess protons, thereby becoming positively charged.
Thus, the object X will be positively charged through charging by conduction.
Learn more about charging by conduction here: https://brainly.com/question/8418256
What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?
Hint: Refer to the image of the electromagnetic spectrum at the beginning of the assignment.
Infrared light
Red visible light
Violet visible light
Ultraviolet light
Answers
Answer:
infrared light
Explanation:
infrared light
what is x-rays ? and how it's formed ?
Answers
X - rays are highly penetrating electromagnetic radiations that are formed when the cathode rays strikes a dense metal.
It has many characteristics such as :
bears no charge.travels with the speed of light.can ionize gases.