Newton's First Law is also called the Law of Inertia. Which of the objects below has the most inertia, the white truck or yellow truck? Explain the reason for your choice.
Answer:
Personally I say the yellow truck but...
Explanation:
It's heavily based on the object's mass...
If you know which object has the most mass than I would choose that one, but personally I think the yellow one has the most mass...
A student notices that a basketball seems to act differently depending on whether the game is being played on a court with a wooden floor, on a concrete driveway, or on blacktop in a park. The student hypothesizes that the surface on which a ball is bounced affects the height of the bounce. How can the student design an experiment to test the hypothesis?
A.The student should drop the same ball from three different heights and have someone measure the height of each bounce.
B.The student should drop three different balls from the same height and have someone measure the height of each bounce.
C.The student should drop the same ball from the same height on three different surfaces and have someone measure the height of each bounce.
D. The student should drop three different balls from the same height on three different surfaces and have someone measure the height of each bounce.
Answer: Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying. By first considering the variables and how they are related ( Step 1 ), you can make predictions that are specific and testable
Explanation:
A hypothesis (plural hypotheses) is a proposed explanation for a phenomenon. For a hypothesis to be a scientific hypothesis, the scientific method requires that one can test it. Scientists generally base scientific hypotheses on previous observations that cannot satisfactorily be explained with the available scientific theories. Even though the words "hypothesis" and "theory" are often used interchangeably, a scientific hypothesis is not the same as a scientific theory. A working hypothesis is a provisionally accepted hypothesis proposed for further research, in a process beginning with an educated guess or thought.
The moon remains in orbit around earth because of the force of —.
The moon remains in orbit around earth because of gravitational energy
Data;
MoonGravityGravitational EnergyMoon and other centripetal bodies maintain a state of constant orbit or centripetal acceleration because of gravitational energy.
The gravitational energy acting on the moon keeps the body rotating. This is further elaborated by Einstein's theory of relativity.
Learn more on gravitational energy here;
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The system is in equilibrium, and the pulleys are weightless and frictionless.
Find the tension T.
The acceleration of gravity is 32 ft/s^2
Note: lb ≡ slug · ft/s^2
Answer in units of lb.
There is an attachment of the system below
Answer:
F = M a where F is in lbs, M in slugs and a in ft/s^2
Apparently this system is motionless so
T + 15 is the downward force on the mass of 15 lbs
1 slug * 32 ft/s^2 is 32 lbs the weight of the other block
It takes a force of 32 / 2 = 16 lbs on the cable to support this weight
16 lbs = T + 15 lbs
T = 1 lbs
For resistors in series, the _____ is the same for each resistor.
Answer:
answer is equivalent resistance
∘₊✧──────✧₊∘
Answer:
the answer is electric current
Explanation:
when resistors are connected in series current is same .
but the voltage is divided between resistors.
An electron is constrained to the central perpendicular axis of a ring of charge of radius 2.7 m and charge 0.027 mC. Suppose the electron is released from rest a distance 0.035 m from the ring center. It then oscillates through the ring center. Calculate its period. (The electron is always much closer to the ring center than a radius.)
The period is mathematically given as
t=7.34*10^{-8}s
What is the period?
Question Parameters:
Charge of radius 2.7 m and charge 0.027 mC.
The electron is released from rest at a distance of 0.035 m from the ring center.
Generally, the equation for the angular velocity is mathematically given as
[tex]w^2=\frac{KQq}{R^3}[/tex]
Therefore
[tex]W^2=\frac{9*10^9*9.1*10^{-5}*1.6*10^{-19}}{2.7^3*9.1*10^{-31}}[/tex]
w^2=7.316*10^{15}
w=8.55*10^2
Therefore
[tex]2\pi/t=w\\\\2\pi/t=8.55*10^2[/tex]
t=7.34*10^{-8}s
In conclusion, The period is
t=7.34*10^{-8}s
Read more about Time
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HEYYYY! PLEASE HELP ME!!
Turn this Algebraic expression into a verbal expression.
2(3j+5+8j)
I need this today! The rest of it is due today too! Thank you!! <33
Answer:
22j+10
Explanation:
that is it in a verbal expression
Relative density of gold is 19.3.The density of water is 1000 kg/m2 .What is the density of gold in sl units?
Answer:
Relative density refers to the ratio of density of substance to the density of reference material.
[tex]relative \: density = \frac{density \: of \: material}{density \: of \: water} \\ \\ density \: of \: gold = {relative \: density} \times density \: of \: water \\ \\ = > 19.3 \times 1000 \: kg \: m {}^{ - 3} \\ \\ = > 19.3 \times 10 {}^{3} kg \: m {}^{ - 3} [/tex]
hope helpful~
A box sits at rest on a rough 33° inclined plane. Draw the free-body diagram, showing all the forces
acting on the box. (b) How would the diagram change if the box were sliding down the plane. (c) How
would it change if the box were sliding up the plane after an initial shove?
(a) The free body of all the forces include, frictional force, weight of the box acting perpendicular and another acting parallel to the plane.
(b) When the box is sliding down, the frictional force acts towards the right.
(c) When the box slides up, the direction of the frictional force changes, it acts towards the left.
Free body diagramThe free body diagram of all the forces on the box is obtained by noting the upward force and downward forces on the box as shown below;
/ W2
Ф → Ff
↓W1
where;
Ff is the frictional force resisting the down motion of the boxW1 is the perpendicular component of the box weight = Wcos(33)W2 is the parallel component of the box weight = Wsin(33)(b) When the box is sliding down, the frictional force acts towards the right.
(c) When the box slides up, the direction of the frictional force changes, it acts towards the left.
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How is the answer d??
Answer:
To keep from falling at the top;
M V^2 / R = M g
This can be rewritten
1/2 M V^2 = M g R /2
2 M g R = 1/2 M V^2 difference in KE between top and bottom
2 M g R + M g R / 2 = 5/2 M g R
Adding the minimum KE at the top to the KE gained when the potential energy of 2 M g R is converted to KE
DUE TOWMOROW HELP
"When a grasshopper egg hatches, a baby grasshopper called a pupa comes out of the egg and begins to grow. Although the nymph grasshopper already looks like a grasshopper, it still needs to molt its exoskeleton many times before becoming a full-grown adult."
Which statement corrects the error in the passage?
Help plss
Answer:
a baby grasshopper is a nymph
Explanation:
hope this helps
Write any Four Characteristics of image, formed by Plane Mirrors .
Question :-
Write any Four Characteristics of image, formed by Plane Mirrors .Answer :-
The Image formed by Plane Mirrors are Virtual and Erect .The Image formed by Plane Mirrors are laterally Inverted .They are Same Sized as that of the Objects .The Image Distance from the Mirror is Same as the Distance of Object from the Mirror .[tex] \underline {\rule {180pt} {4pt}} [/tex]
Wonder Woman uses 2,000 N to lift a truck 2.3 meters in 5 seconds. How much power did she use?
Answer:
she used alot
Explanation:
she would need to be very powerful if she coukd do that.. but then again its wonder woman.
(srry just so detail )
but
f=2,000
x=2.3
w=?
2,000x 2.3 =869.57
w=869.57
t=5 s
p=?
p=w/t
869.57/5=173.913
so she used 173.913 w also known as power
Which of the following statements describe an object in equilibrium?
I. The object is at rest.
II. The object is moving at constant velocity.
III. The net external force on the object is zero.
Explanation:
Which of the following statements describe an object in equilibrium?
III. The net external force on the object is zero
I hope this helps
Which of the following are likely to be affected by a magnet?
Check all that apply.
A. Credit card
B. A CD
C. An audio cassette tape
D. A wind up alarm clock
Answer:
B and D
Explanation:
Both a CD and alarm clock have magnetic properties of metal alloys and polymers.
Give five important things any physic’s student ahould know?
Answer:
students need to take courses in math, such as calculus, linear algebra, and statistics. Computer science classes also are essential, because physicists and astronomers often develop specialized computer programs that are used to gather, analyze, and model data.
For how long must an object travel at 29.8 km/s to cover 940 Gm?
Answer:
For how long must an object travel at 29.8km/s to cover 940Gm? t = 940 Gm 29.8 km/s = 940 ⋅ 1 0 9 m 29.8 ⋅ 1 0 3 m s = 9.4 ⋅ 1 0 11 m 2.98 ⋅ 1 0 4 m s ≈ 3.154 ⋅ 1 0 7 s .
Explanation:
It will take 3,15,43,674 sec to cover a distance of 940 Gm with a speed of 29.8 km/s.
How are speed, distance and time interrelated?
Speed [s], distance [d] and time [t] are related to each other by the following relation -
s = d/t
Given is an object travelling at 29.8 km/s in order to cover 940 Gm.
In 1 Gm(Gigameter) there are 1000000000 m or 10⁹ m
Speed of object [s] = 29.8 km/s = 29800 m/s.
Distance to be covered [d] = 940 x 10⁹ m
Time taken to cover the distance of 1 Gm will be -
t = 1 Gm / 29800
t = (10⁷ x 100) / 29800
t = 10⁷/ 298
t = 33557.1 seconds
Therefore, in order to travel 940 Gm, it will take -
940 x 33557.1 = 3,15,43,674 sec
Therefore, it will take 3,15,43,674 sec to cover a distance of 940 Gm with a speed of 29.8 km/s.
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13) How much mechanical energy does a swinging bowling ball have if it has 250J of kinetic energy and
800J of potential energy?
A)
B)
C)
A. ME = PE + KE
ME = mechanical energy
PE = potential energy
KE = kinetic energy
B. ME = 800 + 250
C. 1050 J
An ocean wave has a speed of 36 m/s and a frequency of 3 Hz.
What is its wavelength?
Answer:
f=4Hz
Explanation:
frequency of a wave if it has a wavelength of 3.0 m and a wave speed of 12m/s
v=fλ → f=v/λ
f=12/3
f=4Hz
3CuCl2 + 2A1 ---> 2AlCl3 + 3Cu Which type of reaction is this? O double displacement combustion synthesis single displacement decompostion
this is a single displacement reaction
It's a single displacement because Cu and Au switched places while Cl stayed in the same spot
How does food affects carbon footprint?
Answer:
Food accounts for 10-30% of a household's carbon footprint, typically a higher portion in lower-income households. Production accounts for 68% of food emissions, while transportation accounts for 5%.
Explanation:
Answer: Food accounts for 10-30% of a household's carbon footprint, typically a higher portion in lower-income households.
Explanation:
what makes urban heat island worse and what effects it and how can it be reduced?
Answer:
Extreme heat events often affect our most vulnerable populations first. Trees, green roofs, and vegetation can help reduce urban heat island effects by shading building surfaces, deflecting radiation from the sun, and releasing moisture into the atmosphere.
What element is an important part of forming polymers? Why?
Answer:
What element is most likely to form polymers?
Because they contain carbon, polymers are categorized as organic compounds. The most common element found in polymers, besides carbon, is hydrogen. Many polymers are manufactured from feedstock, or starting materials, obtained from petroleum.
Now build the complete circuit. Connect a wire to each end of the pair of batteries. Then add the lightbulb and the switch, using additional wires as needed. To disconnect two parts, click where they’re joined, and then click Split Junction. You can also click Reset All to start over. You’ll be successful when you can close the switch (click, hold, and drag it) and the lightbulb glows. Use the drawing tool to sketch the parts of your successful circuit
Answer: <3
Explanation:
HOPE THIS HELPS
can someone please answer this, Ill give you brainliest and your getting 100 points.
Explanation:
Take a look at South American and African plates.
Both have plates moving in opposite directions Soon they will go away and leave water in sideOption C is correct
A body of mass 10 kg is being rotated in a circular path of
diameter 1.0 mm on a frictionless horizontal plane by means of
a string. It performs 10 revolutions in 3.14 s. Calculate the
centripetal force acting on it.
Answer:
The answer is 2N
Explanation:
Given;mass (m) = 10 kgDiameter (d) = 1 mmTo Find;The centripetal force acting on it.Now,
Radius (r) = Diameter ÷ 2
r = 1/2
r = 0.5 mm = 5 × 10‾⁴
T = 3.14 ÷ 10 = π/10 sec
∴ F = mrω² = mr (2π/T)² = 4π²mr/T²
F = 4 π² × 10 × 5 × 10‾⁴/(π/10)²
F = 4 π² × 10 × 5 × 10‾⁴ × 100/π²
F = 4 × 0.5
F = 2 N
Thus, The centripetal force acting on it is 2 Newton
-TheUnknownScientist 72
The light we see from the sun comes from which layer?.
Answer:
The Photosphere
Explanation:
It's photosphere is the sun's area that lights . This layer is responsible for nearly all of the Sun's light.
Answer:
The photosphere
Explanation:
The light we see from the sun comes from the photosphere.
Why should a strong magnet not be near a credit or debit card
Answer:
Magnets can tamper with the magnetic strip on credit cards, erasing the information stored there and rendering them useless
Four forces are exerted on a disk of radius R that is free to spin about its center, as shown above. The magnitudes are proportional to the length of the force vectors, where F1 = F4, F2 = F3 , and F1 = 2F2. Which two forces combine to exert zero net torque on the disk? Select two answers.
(A) F1
(B) F2
(C) F3
(D) F4
The given magnitude of forces of F₁ = F₄, F₂ = F₃, F₁ = 2·F₂, give the
forces that exert zero net torque on the disk as the options;
(B) F₂
(D) F₄
How can the net torque on the disk be calculated?The given parameters are;
F₁ = F₄
F₂ = F₃
F₁ = 2·F₂
Therefore;
F₄ = 2·F₂
In vector form, we have;
[tex]\vec{F_4} = \mathbf{\frac{\sqrt{3} }{2} \cdot F_4 \cdot \hat i - 0.5 \cdot F_4 \hat j}[/tex]
[tex]\vec{F_2} = \mathbf{ -F_2 \, \hat j}[/tex]
Clockwise moment due to F₄, M₁ = [tex]-0.5 \times F_4 \, \hat j \times \dfrac{R}{2}[/tex]
Therefore;
[tex]M_1 =- 0.5 \times 2 \times F_2 \, \hat j \times \dfrac{R}{2} = \mathbf{ -F_2 \, \hat j \times \dfrac{R}{2}}[/tex]
Counterclockwise moment due to F₂ = [tex]-F_2 \, \hat j \times \dfrac{R}{2}[/tex]
Given that the clockwise moment due to F₄ = The counterclockwise moment due to F₂, we have;
Two forces that combine to exert zero net torque on the disk are;
F₂, and F₄
Which are the options; (B) F₂, and (D) F₄
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Along the horizontal section at the bottom of
a tall slide, a child slows to a stop.
This situation can best be described as a transformation of
Kinetic energy into Dissipated energy (eg, heat)
Potential energy into Kinetic energy
Kinetic energy into Chemical energy
Chemical energy into Dissipated energy (eg, heat)
Potential energy into Chemical energy
Answer:
Kinetic Energy to Dissipated energy
Explanation:
Kinetic Energy is Energy that is in motion and being used, Dissipated energy is energy that has been used up by whatever movement or motion was present.