Answer:
You can hold it at a higher level. This creates more tension between the apple and gravity. Creating a higher level of potential energy
William wanted to create a report on a geographical location with the greatest species diversity. Which ecosystem can consider for his report?
A.
the ocean
B.
a desert
C.
a tropical rain forest
D.
a coral reef
Question 1: A car accelerates from rest, and travels 400 m in 3.5 seconds. If
the net force on the car is 12,000 N what is the mass of the car?
Explanation:
u= 0 ( because car start rest)
v=400
t=3.5
v-u/t
400-0/3.5
400/3.5
114m/s
f= 12000
f=ma
12000=m*114
m=12000/114
105 kg approx
An airplane needs to reach a forward velocity of 56.4 m/s to take off. On a 2000 meter runway, what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest? NEED WORK SHOWN!! 100 PTs
What is the displacement of the airplane?
What is the initial velocity of the airplane?
What is the final velocity of the airplane?
Write the equation you will use to solve the problem.
What was your acceleration?
1.0 m/s^2
0.95 m/s^2
0.87 m/s^2
0.80 m/s^2
Displacement of the airplane (s) = 2000 m
Initial velocity of the airplane (u) = 0 m/s (Starts from rest)
Final velocity of the airplane = 56.4 m/s
Equation used to solve the problem:
[tex] \boxed{ \bf{ {v}^{2} = {u}^{2} + 2as}}[/tex]
By substituting values in the equation, we get:
[tex] \rm \longrightarrow {56.4}^{2} = {0}^{2} + 2 \times a \times 2000 \\ \\ \rm \longrightarrow 3180.96 = 0 + 4000a \\ \\ \rm \longrightarrow 4000a = 3180.96 \\ \\ \rm \longrightarrow \dfrac{4000a}{4000} = \dfrac{3180.96}{4000} \\ \\ \rm \longrightarrow a = 0.80 \: m {s}^{ - 2} [/tex]
[tex] \therefore [/tex] Minimum uniform acceleration necessary for the plane to take flight (a) = 0.80 m/s²
describe the difference between particle motion in solids and liquids.
Answer:
Particles in a: gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
i hope this helps your answer
Answer:
liquids vibrate, move about, and slide past each other. solids vibrate but generally do not move from place to place.
who plays among us?????
Answer:
i do
Explanation:
A golf club of mass 0.215 kg has a clubhead speed of 55 m/s (~120mph) strikes a golf ball of mass 0.046 kg at rest on a tee. After the collision, the clubhead has a speed of 42 m/s (same direction of swing). Use the conservation of momentum law to find the speed of the ball just after impact.
For the Clubhead:
m1 = 0.215 kg
initial velocity(u1) = 55 m/s
Final velocity (v1) = 42 m/s
For the Ball:
m2 = 0.046 kg
initial velocity (u2) = 0 m/s
final velocity (v2) = x m/s
Solving for x:Using the law of conservation of momentum:
m1u1 + m2u2 = m1v1 + m2v2
replacing the variables
(0.215)(55) + (0.046)(0) = (0.215)(42) + (0.046)(x)
11.825 = 9.03 + 0.046x
0.046x = 2.795
x = 2.795 / 0.046
x = 60.76 m/s
Therefore, the ball will be projected at a velocity of 60.76 m/s
Gold is a solid at room temperature and has the basic molecular-level structure illustrated below. The outer electrons of each gold atom carry enough energy that they can move freely between different atoms. Based on this information, it can be inferred that gold would be a good material out of which to make A. shock absorbers in automobile suspension systems. B. circuit components in computer processors. C. sharp cutting tools used to shape other metals. D. structural supports on buildings or bridges.
Answer: Did you ever find the answer I’m on the same question
Explanation:
Answer:
B
Explanation:
i did it and got it wrong and it told me it was B
What type of electric current does a power plant generate for use in your home?
А. direct
B. alternating
C. repeating
D. straight
Answer:
B........................
1 point
1. A child falls sideways off a sled while sledding on friction-less ice. What
happens to the velocity of the sled? *
a) It increases.
O b) It remains the same.
d) cannot be determined from the information given
c) It decreases.
Answer:
c) It decreases.
Explanation:
If you treat this as a case of momentum of the sled while sledding on a friction-less ice, then mass and velocity are directly proportional. This means increasing either mass or velocity , the momentum of the object increases proportionally.
In this question, when the child falls sideways off the sled, the mass reduces, the velocity experiences the same causing a decrease in momentum .
Can you do a backflip
Answer:
yes a double gainer
Explanation:
Which mineral is also an element graphite courts calcite hematite
Answer:
look in lesson brainly can some time be wrong
1) A parked car starts to move with a constant velocity of 3 m/s, after moving
3.4 seconds, how far did the car go?
Answer:
velocity (v) =distance(s) ÷ time (t)
Explanation:
v=s÷t
s=v×t
s=3×3.4
s= 10.2m
What would happen to moon if gravity no longer affected it?
Answer: The moon would continue to move on its orbital path.
Explanation:
Use the drop-down menus to complete the statements. v ion is formed. OS When electrons are lost, a ____ When electrons are gained, a ____ ion is formed.
Answer:
Positive
negative
this is on edgy
Explanation:
I got it right when I did this.
Answer:
1. Positive
2. Negative
Explanation: edge 2021
Hope this helps! :)
1. What are the main activities involved in studying physics?
I
A basketball is shot at 14.0 m/s at a 65.0 degree angle. What is the magnitude only (no direction) of the velocity of the ball 2.16 seconds later?
(I reposted this because some idiot trolled the last one)
Answer:
10.4 m/s
Explanation:
g The tires of a car make 75 revolutions as the car reduces its speed uniformly from 91 km/h to 48 km/h . The tires have a diameter of 0.78 m . Part A What was the angular acceleration of the tires
Answer:
α = -0.01625 rad / s²
Explanation:
This is an exercise in angular kinematics, we can use the relation
w = w₀ + 2 α θ
linear and angular variables are related
v = w r
w = v / r
Let's reduce the magnitudes to the SI system
v₀ = 91 km / h (1000m / 1km) (1h / 3600s) = 25.278 m / s
v = 48 km / h = 13,333 m / s
θ = 75 rev (2π rad / 1 rev) = 471.24 rad
Let's find the angular velocities
w₀ = v₀ / r
w₀ = 25.278 / 0.78
w₀ = 32,408 rad / s
w = v / r
w = 13.333 / 0.78
w = 17.09 rad / s
we calculate the angular acceleration
α = (w- w₀) / 2θ
α = (17.09 - 32.408) / (2 471.24)
α = -0.01625 rad / s²
the negative sign indicates that the wheel is stopping
Question 7
A thick uniform rubber rope of density 0.7 gcm-3 and Young Modulus 5 x 106 Nm 2 has a length 6.7 m. when
hung from the ceiling of the room, calculate the increase in length due to its own weight ?
O A. 35.79 x 10-2 m
O B. 43.81 x 10-2 m
OC.52.34 x 10-2 m
O D.61.65 x 10-2m
Answer:
Increase in length, e = 61.59 * 10⁻²m
The closest value from the options is option D. 61.65 x 10-2m
Explanation:
Young Modulus = stress/strain = (F/A)(/e/L) = F * L/A * e
where F = force; L = original length; A = area; e = increase in length
making e subject of formula; [tex]e = F * L/Y * A[/tex]
Also force, F = mass * acceleration due to gravity;
mass = density * volume = density * area * length = ρ * A * L
Therefore, force, F = ρ * A * L * g
e = ρ *A * L* L * g/Y * A = ρgL²/Y
density = 0.7 gcm⁻³ = 0.7 * 10³ kgm⁻³; g = 9.8 ms⁻²
e = {0.7 * 10³ kgm⁻³ * (6.7 m)² * 9.8 ms⁻²}/5 * 10⁶ Nm²
e = 61.59 * 10⁻² m
A mnemonic device in which phrases or poems use the first letter of each word to help a person remember the information is an example of a(n) __________.
A.
acronym
B.
rhyme
C.
list
D.
acrostic
Answer:
D. Acrostic
Explanation:
Answer:
D.
acrostic
Explanation:
How does a radio work?
by transmitting and receiving electromagnetic waves. The radio signal is an electronic current moving back and forth very quickly. A transmitter radiates this field outward via an antenna; a receiver then picks up the field and translates it to the sounds heard through the radio.
what is magnetism in general
Answer:
Magnetism is one aspect of the combined electromagnetic force. It refers to physical phenomena arising from the force caused by magnets, objects that produce fields that attract or repel other objects. Permanent magnets, made from materials such as iron, experience the strongest effects, known as ferromagnetism.
Explanation:
Answer:
Magnetism is a class of physical phenomena that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is one aspect of the combined phenomenon of electromagnetism.
A cement truck when filled weighs 42 000 N. Calculate its mass
Answer:
Mass = 4281.35 kg
Explanation:
From Newton's law of motion, the weight of an object is given by the formula;
W = mg
Where;
W is weight
m is mass
g is acceleration due to gravity which has a constant value of 9.81 m/s².
We are given weight W = 42000 N.
Thus;
42000 = m × 9.81
m = 42000/9.81
m ≈ 4281.35 kg
A black lift of amber is placed in water and a laser beam travels from the water through the amber. The angle of incidence is 35 degrees while the angle of refraction is 24 degrees. What is the index of refraction of amber
Answer:
Explanation:
refractive index of ember = sin of angle of incidence / sin of angle of refraction
= sin 35 / sin24
= .5735 / .4067
= 1.41
This is refractive index of ember with respect to water
refractive index of ember with respect to water
= wμe = μe / μw
μe = wμe x μw
= 1.33 x 1.41
= 1.87
refractive index of ember with respect to air = 1.87 .
A balloon is filled with 73 L of air at 1.3 atm pressure. What pressure is needed to change the volume to 43L?
Answer:
roughly 2.2 atm
Explanation:
using Boyle's law (P1V1=P2V2),
73×1.3=43×x
x= 2.21 or 2.2 atm
A book sits on a table, without moving, for two months.
In those two months:
a net force acted on the book
only gravity acted on the book
no net forces acted on the book
no forces acted on the book
Answer:
No forces acted on the book correct me if wrong please
A rope of negligible mass supports a block that weighs 30.0 N. as shown below. The maximum tension the rope can support without breaking is 50.0 N. What is the maximum
acceleration the weight can be pulled upwards with without breaking the rope? (Use g = 10 m/s)
WON
Answer:
a = 6.7 m/s²
Explanation:
The formula to apply here is :
Mass * acceleration = Tension -weight
m*a = Ft -mg -----where m is mass of block, a is acceleration , Ft is force due to tension.
Given in the question that ;
Mass of block = 3 kg
Ft = 50 N
g= 10
m*a = Ft -mg
3*a = 50-30
3a= 20
a= 20/3
a= 6.7 m/s²
The maximum acceleration will be "6.7 m/s²".
Given:
m = 3 kgFt = 50 Ng = 10By applying the formula,
→ [tex]Mass\times acceleration = Tension -weight[/tex]
or,
→ [tex]ma = Ft-mg[/tex]
By substituting the values, we get
→ [tex]3\times a = 50-30[/tex]
→ [tex]3a = 20[/tex]
→ [tex]a = \frac{20}{3}[/tex]
→ [tex]a = 6.7 \ m/s^2[/tex]
Thus the above answer is right.
Learn more:
https://brainly.com/question/14808408
A new business should be based on an entrepreneur's individual interests because the entrepreneur must have sufficient confidence to succeed. be willing to take personal responsibility. have enough determination to work alone. dedicate as many hours as needed to the work.
Answer: D) dedicate as many hours as needed to the work.
Explanation:
edge 2020
If the entrepreneur puts in dedication to duty, responsibility and long hours of work, the new business is more likely to survive.
Who are entrepreneurs?A business refers to any venture that is set up with the intention of making profit. The proprietors of new businesses are called entrepreneurs. They are saddled with the responsibility of propagating the activities of the new business.
The entrepreneur must be ready to put in:
Long hours of workResponsibilityDedicationIf the entrepreneur does all these, his/her new business is more likely to survive than ever.
Learn more about entrepreneur:https://brainly.com/question/4910555
Which best describes the way a sound wave is sent through the radio
Answer:
sound wave-electrical wave-radio wave
Answer:
D
Explanation:
on edg
A student determines the density, solubility, and boiling point of two liquids, Liquid 1 and Liquid 2. Then he stirs the two liquids together and heats them. After stirring and heating the liquids, two different liquids form, Liquid 3 and Liquid 4.
Then the student determines the density, solubility, and boiling point of Liquids 3 and 4. He concludes that a chemical reaction occurred. Here are his results:
Dentity)
Soluble in Berling
Point
ܠܐ L
164
Yes
0.87
1500
Liquid
0.96
Yes
Liquid 2
Yes
and heating
Liquid
166
Loud
100
How does the student know that a chemical reaction has occurred?
The student knows that a chemical reaction has occurred because Liquid 3 has different properties than Liquid 4.
The student knows that a chemical reaction has occurred because Liquid 1 has different properties than Liquid 2.
The student knows that a chemical reaction has occurred because Liquids 3 and 4 have different properties than Liquids 1 and 2.
The student knows that a chemical reaction has occurred because a chemical reaction always occurs when two liquids are mixed together.
Answer:
The student knows that a chemical reaction has occurred because Liquids 3 and 4 have different properties than Liquids 1 and 2.
Explanation:
You see a penny sitting on a turntable rotating with constant speed. How many forces are acting on the penny?
a. The friction force of the turntable on the penny pointing inward towards the center.
b. The downward force of the earth on the penny and the upward force of the turntable on the penny.
c. The centripetal force.
d. The downward force of the earth on the penny, the upward force of the turntable on the penny. and the inward friction force of the turntable on the penny.
e. The downward force of the earth on the penny.
Answer:
d.
Explanation:
Since the penny is not accelerated in the vertical direction, there must be two forces (equal and opposite each other) acting on it in this direction.One of them is the downward force that the earth exerts on the penny, the other one is the normal force exerted by the turntable on the penny.In order to keep the penny rotating, there must be a third force, the centripetal force.This centripetal force is not a new type of force, it's the net force acting on the penny inward.This force is provided by the friction force of the turntable on the penny, as the turntable is rotating at a constant speed, so no tangential acceleration exists.