Answer:hence, the force needed to accelerate the 1000kg car by 3m/s2 is 3000N
Explanation:
plz mark as brainlyist plz
A 45-kg child sits on a 3.2-kg tire swing. What is the tension in the rope that hangs from a tree branch?
Answer:
472.36 N
Explanation:
The total mass with the tire and child would be 45 kg + 3.2 kg = 48.2 kg
Ft = force tension
Fg = force of gravity
Fnet=0 (because child is motionless and not accelerating)
0 = Ft - Fg
Ft = Fg
Ft = m*g
Ft = 48.2 kg * 9.8 m/s^2
Ft = 472.36 N
Hope this helps!!
A 45-kg child sits on a 3.2-kg tire swing. The tension of the rope is 472.36 N.
The parameters given in the question is
Mass of the child= 45 kg
Mass of the tire swing attached to the tree= 3.2 kg
What is Tension?Tension can be defined as the force that can gets transmitted through a rope, string or wire when they are pulled through any forces that should acting from opposite sides.The tension force can be directed throughout the length of the wire and also it pulls the energy equally on the bodies at the ends.All the physical object which will be in contact exerts some force on one another.The first step is to calculate the total mass. The total mass can be calculated as follows;
= Mass of the child + mass of the tire swing
= 45 + 3.2
= 48.2 kg
The tension can be calculated as follows,
= mass × acceleration
= 48.2 × 9.8
= 472.36
Hence, A 45-kg child sits on a 3.2-kg tire swing. The tension of the rope is 472.36 N.
Learn more about Tension,
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1. Electrons spinning around the nucleus of an atom cause the atom to
a. be a tiny magnet.
b. have north and south poles.
c. have a magnetic field.
d. all of the above
Answer:
Answer:answer is C
is the magnetic field
HELP ASAP!!! The gravitational pull of the Moon is much less than the
gravitational pull of Earth.
Which two statements are true for an object with a mass of 20 kilograms that
weighs 44 pounds on Earth?
O A The object's weight would be the same on the Moon
B. The object's weight would be less on the Moon
C. The object's mass would be the same on the Moon
DD. The object's mass would be less on the Moon
Answer:
I'm pretty sure its B and C
Explanation:
B bc the weight is gravitational pull x mass so when the object has same mass the weight is smaller on moon
C bc mass is the same - you can't change it
The correct answers are B and C
how important is it to have an emergency plan
Answer:
The actions taken in the initial moments after a crisis matter. These steps can determine how disruptive the aftermath will be. With this in mind, companies need to plan for any potential incidents that could occur. In this blog post, we discuss the importance of emergency planning, the impact it has on a crisis and how to prepare for the worst.
Explanation:
hope you like it
What is the recommended minimum amount of daily exercise for teenagers?
Answer:
The minimum amount should be 30 minutes three times a week.
Explanation:
in the equation for the gravitational force between two objects which quantity must be squared?
Answer:
Distance
Explanation:
trust me
Answer:
The distance "r" must be squared
Explanation:
In the equation F=GMm/r^2, the distance "r" is squared, which represents the distance between masses M and m and G is the gravitational constant.
An object has a force of 88N to the right Wth an acceleration of 8 m/s2 to the right. What is the mass of the object? (mass has a unit of kg.)
Answer:
your answer is 11
Explanation:
A friend of yours left a pile of mail on a table. You notice your favorite magazine sticking out from under a package. You grab the magazine by its corner and get it from under the package. As you get your magazine, the package does not topple because
A- it has no acceleration
B-the force of gravity keeps it secured
C-it has inertia
D- a pair of action-reaction forces act on it
Answer:
d or b i think
Explanation:
i looked it up on go ogle :)
Answer:
b
Explanation:
sounds like it should be right
31 The diagrams show the forces acting on four identical balls.
Which ball has a resultant force acting to move it to the right?
Answer:
C
Explanation:
The force applied to it is causing it to move right.
How do two ions of the same element differ?
Answer:
In the electrons
Explanation:
The charge of ions of an element is determined by the amount of negative charged electrons are present. The protons and neutrons in the nucleus do not change.
Answer:
it is possible to use two icons in css content one below content 10px;color #99999
which of the following instrument measure time most accurately
Answer:
What are the options???
Answer:
Electronic stopwatch
Explanation:
lectronic stopwatch, stop clock, pendulum clock and hour glass are the instruments used for measuring the time. Among the following, electronic stopwatch has the highest level of accuracy whereas hourglass has the lowest level of accuracy in measuring time.
What is the direction of the force of an object moving in a circle?
1.toward the center of the circle
2.toward the outside of the circle
3.straight up
4.45 degree angle
Answer:
The answer is 45 degree angle
WILL GIVE BRAINLIST a HELP PLEASE
pleaseeee
Answer:
Concave mirror
Explanation:
Because as we move the object far away from the mirror, the image gets inverted.
Answer:
Concave mirror
Explanation:
SOS: I completely forgot what net force is...
34 Which of these human characteristics shows discontinuous variation?
A blood group
B hair color
C height
D weight
Answer:
Blood group
Explanation:
Answer:
A. Blood group.
Explanation:
They could purely random genetic changes.
Which of the following will best transport electrons around an electrical circuit
Answer:
b is correct!!!!!!!!!!!
The best transport electrons around an electrical circuit are connected in series. Thus, the correct answer would be option (B) are connected in series.
What is alternating current (AC)?An alternating current (AC) circuits continuously switches the direction of electron flow back and forth, which can result in fluctuations in voltage and current.
On the other hand, in a direct current (DC) electrical circuit, the electrons flow in one direction, from the negative terminal of the power source to the positive terminal. This unidirectional flow of electrons provides a consistent and stable flow of electricity throughout the circuit.
Connecting components in series mean that they are connected end-to-end, and the current flowing through them is the same.
Overall, the best option to transport electrons around an electrical circuit are to connect in series.
Therefore, the correct answer would be option (B) are connected in series.
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Which action could a student take to produce a longitudinal wave with a large amplitude?
A. Stand still as possible
B. Light a candle
C. Bang on a drum
D. Drop a pebble in a pond
Answer:
Explanation:
A
Answer:
C - Bang on a drum
Explanation:
!!! HELP!!! HELL GELP HELP HELP
Answer:
supernova
Explanation:
A radioactive isotope has a half-life of 20 hours. How long will it take for 3/4 of the source to decay?
Answer:
40 hours
Explanation:
in 20 hours, 1/2 will decay
in 40 hours, 1/4 will decay
therefore, 40 hours
On which factor does the inertia of a body depend?
Answer:
The moment of inertia depends on the following factors, The density of the material. Shape and size of the body. Axis of rotation (distribution of mass relative to the axis)
PLEASE HELP PLEASEEEE
Answer:
Concave mirror
Explanation:
Because as we move the object far away from the mirror the image gets inverted
An object has a mass of 3 kg and an acceleration 7 m/s2to the left. What is the force?
Answer:
your answer is 21 n
Explanation:
32) In an electrical circuit the current is measured in
A) amps using an ammeter.
B) amps using a voltmeter.
C) volts using an ammeter.
D) volts using a voltmeter.
Answer:
A) amps using an ammeter.....
guys pls thi is my last pointa just answer this!!!!(WILL GIVE BRAINLY) A student takes apart a wooden box. What can they build with the materials from the box?
A) They cannot make anything with the materials.
B) They can make something new with the materials.
C) They can only make a wooden box from the materials.
Answer:
i guess u could pick "B" :)
Explanation:
A 127 N object vibrates with a period of 3.32 s when hanging from a spring. What is the spring constant of the spring? The acceleration of gravity is 9.81 m/s 2 . Answer in units of N/m.
Answer:
The spring constant is approximately 46.382 newtons per meter.
Explanation:
From Physics, the period ([tex]T[/tex]), measured in seconds, experimented by an object under Simple Harmonic Motion:
[tex]T = 2\pi\cdot \sqrt{\frac{W}{g\cdot k} }[/tex] (1)
Where:
[tex]W[/tex] - Weight, measured in newtons.
[tex]g[/tex] - Gravitational acceleration, measured in meters per square second.
[tex]k[/tex] - Spring constant, measured in newtons per meter.
If we know that [tex]W = 127\,N[/tex], [tex]g = 9.807\,\frac{m}{s^{2}}[/tex] and [tex]T = 3.32\,s[/tex], then the spring constant of the system is:
[tex]\frac{T^{2}}{4\cdot \pi^{2}} = \frac{W}{g\cdot k}[/tex]
[tex]k = \frac{4\cdot \pi^{2}\cdot W}{g\cdot T^{2}}[/tex]
[tex]k \approx 46.382\,\frac{N}{m}[/tex]
The spring constant is approximately 46.382 newtons per meter.
1. A plane mirror has a
surface
Answer:
A plane mirror is a mirror with a flat (planar) reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence. The angle of the incidence is the angle between the incident ray and the surface normal (an imaginary line perpendicular to the surface).
How do longitudinal waves differ from transverse waves? Give examples of both.
Answer:
Explanation:
Longitudinal
The medium moves in the same direction of the wave
It acts in one dimension
The wave cannot be polarized or aligned
This wave can be produced in any medium such as gas, liquid or solid
The earthquake P wave is an example
It is made of rarefactions and compressions
Transverse
The medium is moving perpendicular to the direction of wave
It acts in two dimension
The wave can be polarized or aligned
This wave can be produced in solid and liquid’s surface
Earthquake S wave is an example
It is made of troughs and crests
What term is defined as speed with a specific direction?
velocity
position
distance
displacement
Answer:
Velocity
Explanation:
I took the test.
if tje object is placed pf the focus of a concave mirror the image is formed....
Answer:
when object is kept at focus then image will form at infinity
Explanation:
virtual erect highly diminished image will be formed and it is used in the lense in galilean telescope
A scientist performed an investigation involving a reaction that produced AI, (SO )3. How many sulfur atoms are
represented in this formula?
Answer:
D
Explanation:
Because you add them all up it equals 9