Answer:
I need the picture to amswer the question thay's why it says " "
Using your knowledge of momentum explain why cars are designed to have crumple zones?
Answer: I think cars are designed to have crumble zone because lets say you're going 60-70 mph and you hit a brick wall that cant move, it would be a very hard jolt causing the beings inside to get thrown forward, but if it has a crumble zone it would slow the the jolt from is slowing down in the hit.
A projectile is shot from the edge of a cliff 125 m above the ground level with an initial speed of 105 m/s at an angle of 37 degrees with the horizontal. (a) Determine the vertical velocity final. (it is not - vi, since we are on a cliff 125m up)
A.)80.2 m/s
B.)-80.2 m/s
C.)40.2 m/s
D.)-40. 2 m/s
Answer:
alright we have to find the initial velocity of the projectile which was shot from the edge of a cliff 125m above ground level with the initial speed being equivalent to 105 m/s at an angle of 37 degrees i would assume the answer to be C. hope this helps im a tad rusty at this subject
Explanation:
I WILL CROWN THE BRAINLIEST IF YOU ANSWER CORRECT
ELECTROMAGNET WAVES
Travel through what?
Carry energy, often called what?
Emitted by what?
Three Examples of electromagnetic waves.
Answer:
Electromagnetic waves differ from mechanical waves in that they do not require a medium to propagate. This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space.
Example: Radio waves, microwaves, visible light, and x rays
How could you set up the Strong and Weak magnets to show Barry that strong magnets and weak magnets can BOTH repel and attract object's?
Answer:
To show that magnets repel, you must place the strong and weak magnets to another magnet with their poles being both south or both north facing eachother.
To show they attract, place opposite poles near eachother.
two children, A and B, fire identical 10.0g all bearings from a catapult. the elastic band of each catapult extended by 0.10m and then released to fire the ball bearings. Child A's elastic band has a spring constant of 144N/m. calculate the energy transferred to the kinetic energy store of the child A's ball bearing.
thanks soo much (:
WORTH 50 PTS
The energy transferred to the kinetic energy store of the child A's ball bearing is 0.72 J.
Energy transferred to the kinetic energy
The energy transferred to the kinetic energy store of the child A's ball bearing is determined from the principle of conservation of energy as shown below;
K.E = Ux = ¹/₂kx²
K.E = ¹/₂ x 144 x 0.1²
K.E = 0.72 J
Thus, the energy transferred to the kinetic energy store of the child A's ball bearing is 0.72 J.
Learn more about kinetic energy here: https://brainly.com/question/25959744
#SPJ1
an object at rest has no ________ energy, but it may have ________ energy resulting from its location or structure.
Answer: first blank: kinetic
Second blank: potential
Explanation:
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what is the angular speed of the tip of the minute hand on a clock, in rad/s?
Answer:
0.10472 radians/minute
Explanation:
It completes a full rotation around that circular clock in 60 minutes. So the angular speed of the minute hand is 2 * pi / 60 = pi / 30 = 0.10472- radians/minute .
The angular speed is the ratio of angular displacement to time. Then the angular speed is π/1800 radians per second.
What is angular speed?The rate of change of angular displacement is called angular speed.
We know that the angular speed formula
[tex]\rm Angular \ speed = \dfrac{Angular \ displacement }{time}[/tex]
The angular speed of the tip of the minute hand on a clock, in rad/s, will be given as
We know that in one hour it rotates 360 degrees or 2π. And in one hour we have 3600 seconds. Then the angular speed will be
[tex]\rm Angular \ speed = \dfrac{2\pi}{3600}\\\\\\Angular \ speed = \dfrac{\pi}{1800}[/tex]
More about the angular speed link is given below.
https://brainly.com/question/7359669
Fuzzy and kermit
are driving at 10 m/s but slow down to meters per seconto avoid hitting a squirrel a time it takes in a slow down is 3.1 seconds what is the acceleration
Answer:
-2.9m/s[tex] { - 2.9ms}^{2} [/tex]Pendulum mass is 4 kg. Use your equations for gravitational potential energy and kinetic energy to determine these values based on the data given below. Total energy is the sum of gravitational potential energy and kinetic energy. In this problem, round gravity to: g = 10 m/s2.
its should be 2.0 and 4.5 on it
Distance between gas molecules in the case of:
-Increase in temperature
-Decrease in temperature
-Increase in volume
-Decrease in volume
-Increase in pressure
-Decrease in pressure
Answer:
-Increase in temperature: increase
-Decrease in temperature: decrease
-Increase in volume: increase
-Decrease in volume: decrease
-Increase in pressure: increase
-Decrease in pressure: decrease
Explanation:
-Increase in temperature:
● Molecules gain kinetic energy and move fast thus increasing distance
-Decrease in temperature:
● Kinetic energy of molecules decrease so they have smaller distance
-Increase in volume:
● Molecules have more space to move around so distance increase
-Decrease in volume:
● Less space, molecules collide with each other because of decreased distance thus increasing pressure
-Increase in pressure
● Molecules collide with each other and the walls of container increasing pressure so molecules move faster and it increases distance
-Decrease in pressure:
● Molecules collide with each other and walls of container less frequently so distance between molecules decrease
Hãy giải đề giúp tui
Answer:
ở đâu?
Explanation:
................
Friction can be reduced by using ___________.
Answer:
Make the surfaces little more smoother. ...
Lubrication is another way to make a surface smoother. ...
Make the object more streamlined. ...
Reduce the Normal force acting between the surfaces in contact. ...
Reduce the contact between the surfaces, so that less number of bonds will be formed.
Scientists can determine a fossil's actual age by using which of the following methods?
hypothesizing
relative dating
radiometric dating
estimation
An object is placed at 0 on a number line. It moves 3 units to the right, then 4 units to the left, and then 6 units to the
right. What is the displacement of the object?
O1
O 5
O 7
O 13
a car travels west for 240km in 4 hr what is the car velcity
Two waves travel through ocean, one with wavelength 3 m, one with 6 m. Which one has greater speed?
Answer: 6m
Explanation: 6 is more than 3 and their both being measured by m
I NEED THIS ANSWERED ASAP NO LINKS !!!
I need a answer that is 100% ACCURATE
Answer:
it increasees
Explanation:
its 100% acurate dont worry
Describe the difference between distance, position, and displacement
Answer:
Explanation:
Position is the location of the object (whether it's a person, a ball, or a particle) at a given moment in time.
Displacement is the difference in the object's position from one time to another.
Distance is the total amount the object has traveled in a certain period of time.
I hope this helps!
Q1. A 130 N horizontal force keeps a 30 kg chair moving at a constant velocity. Find the
coefficient of kinetic friction between the chair and the floor.
The coefficient of kinetic friction between the chair and the floor is 0.442.
The given parameters;
horizontal force on the chair, F = 130 Nmass of the chair, m = 30 kgThe normal force on the chair is calculated as follows;
Fₙ = mg
Fₙ = 30 x 9.8 = 294 N
The frictional force between the chair and the floor is calculated as follows;
Fk = μFₙ
The net force on the chair is calculated as follows;
[tex]\Sigma F_x = 0\\\\F- \mu_k F_n = 0\\\\130 - \mu_k (294) = 0\\\\\mu_k = \frac{130}{294} \\\\\mu_k = 0.442[/tex]
Thus, the coefficient of kinetic friction between the chair and the floor is 0.442.
Learn more here:https://brainly.com/question/20241845
a tennis ball is launched from the floor at a velocity of 90 m/a at an angle of 13 degrees to the horizontal. calculate its range
Answer:
~186
Explanation:
1) R= (V^2 × sin A ) /g
V=90 m/a
A= 13°
g= 9.8 or 10 (I will take 9.8 for right result)
R= (90^2 × sin 13) / 9.8 = 185.928932672 ~ 186
As shown above an adhesive has been applied to contacting faces of two blocks so that the blocks interact with an adhesive force that has a magnitude, Fadhesion A tension, T, is exerted by a wire attached to the upper blocks causing the blocks to remain at rest The two blocks have weights, Wbottom and Wtop. Which of the following must be true? (1 point) ♡ O Wtop=T OT = Wtop - Fadhesion O Wbottom Fadhesion O T = Wbottom + Wtop + Fadhesion
The magnitude of the adhesive force allows the top block to remain
attached to the bottom when the blocks and the wire are balanced.
The option that must be true is; [tex]\mathbf{W_{bottom} = F_{adhesion}}[/tex]
Reason:
The tension exerted by the wire attached to the top block = T
Magnitude of the adhesive = [tex]F_{adhesion}[/tex]
Weight of the top block = [tex]W_{top}[/tex]
Weight of the bottom block = [tex]W_{bottom}[/tex]
Given that with the exertion of the tension, the two blocks remain at rest, we have;
T = [tex]W_{top}[/tex] + [tex]W_{bottom}[/tex]The adhesive causes the bottom block to remain attached to the top block, we have;
Therefore, the magnitude of the adhesive force adds the bottom weight, to the top, weight, which gives;
The magnitude of the adhesive force = The weight of the bottom block
Therefore;
[tex]W_{bottom}[/tex] = [tex]F_{adhesion}[/tex]Learn more here:
https://brainly.com/question/18907970
Answer:
Wbottom=Fadhersion it was right on y test
Explanation:
identify the types of elements in the schematic diagram give the number of each types
Where's the diagaram?
Công của lực điện không phụ thuộc vào?
Explanation:
what language is thathow do I literally understand thathow much is a city of a body when it covers 600m in 5 min?
it is an answer : 2 m/s
i don't know sloution
Answer:
2m/s
Explanation:
5min × 60sec
=300
now,
600÷300
=2
Emmy is running a marathon to try to get a Boston qualifying time. She runs at a constant velocity of 6 mph from 7:00 am to 8:30 am.
At 9:00 am, her velocity jumped to 8 mph. She completed her race at 10:30 am at a velocity of 10 mph. Calculate her acceleration
from 9:00 am - 10:30 am.
Answer:
answer is c
Explanation:
the quantity x to be determined from the equation X=P-Q.
Answer:
the correct answer will be 6.82 %that is 7%
p(1.27)-q(0.83) =x=0.44
0.02+0.01 =0.03 (maximum uncertainty)
percentage uncertainty =0.03/0.44×100 %
=6.82%
=7%
Explanation: it was d on my end
in 10 seconds a car accelerates 4m/s^2 to 50
m/s. How fast was the car going before it accelerated?
Variables:
Equation and Solve:
Answer:
10m/s
Explanation:
using the formula a=v-u
t
What is an inclined plane that is wrapped in spiral
Answer:
A screw
Explanation:
The threads of a screw act like an inclined plane to increase the distance over which you exert the input force.
Political polls taken before major elections are examples of ________ research.
Answer:
survey
Example:
none
A 30N force is applied to an object having a mass of 300 grams. Calculate the acceleration of the moving object
Answer:
9000 m/s
Explanation:
A=Fm
Acceleration = Force x Mass(Newtons)