Answer:1 w= 1 v x 1 A
Explanation: just took the test
Pls help I give brainLy and a thanks and points
An arcade ball is thrown with an initial speed of 7.0 m/s and follows the trajectory shown. The ball enter the basket .95 seconds after it is launched. What are the distances x and y?
Complete Question
The diagram for this question is shown on the first uploaded image
Answer:
[tex]x = 4.70 \ m[/tex] , [tex]y = 0.2803 \ m[/tex]
Explanation:
From the question we are told that
The initial velocity of the arcade ball is [tex]u = 7.0 \ m/s[/tex]
The time taken by the ball to enter the basket is [tex]t = 0.95 \ s[/tex]
Generally the x -component of the initial velocity is
[tex]u_x = 7 * cos (45)[/tex]
=> [tex]u_x = 4.95 \ m/s[/tex]
Generally the y -component of the initial velocity is
[tex]u_x = 7 * sin(45)[/tex]
=> [tex]u_y = 4.95 \ m/s[/tex]
Generally the distance x is mathematically represented as
[tex]x = u_x * t[/tex]
=> [tex]x = 4.95 * 0.95[/tex]
=> [tex]x = 4.70 \ m[/tex]
Generally from kinematic equation the distance y is mathematically represented as
[tex]y = u_y * t - \frac{1}{2} * g * t^2[/tex]
=> [tex]y = 4.95 * 0.95 - \frac{1}{2} * 9.8 * 0.95^2[/tex]
=> [tex]y = 0.2803 \ m[/tex]
A sound wave traveling in water 144m/s has a wavelength of 0.5m determine the frequency of the wave
Heya!!
For calculate frequency, lets applicate formula:
[tex]\boxed{f=v/\lambda}[/tex]
Δ Being Δ
f = Frequency = ?
v = Velocity = 144 m/s
[tex]\lambda[/tex] = Wavelenght = 0,5 m
⇒ Let's replace according the formula:
[tex]\boxed{f = 144\ m/s / 0,5\ m }[/tex]
⇒ Resolving
[tex]\boxed{f = 288\ Hz}[/tex]
Result:
The frequency of that wave is 288 Hertz
Good Luck!!
Answer:
K Shut up bro
Explanation:
A 1000 kg whale is dropped at a rate of 9.8 m/s2. With what force will it hit the ground?
Answer:
If your teacher doesn't ask u to turn kg into lb:
F = m × a
F = 1000kg × 9,8m/s2
F = 9800N
If she does ask u then:
m= 1000kg × 2,206 = 2204.62lb
use the same formula
The force with which the whale will hit the ground is 9800 Newtons.
Given the data in the question:
Mass of whale; [tex]m = 1000kg[/tex]Acceleration at which the whale was dropped; [tex]a = 9.8m/s^2[/tex]Force; [tex]F = \ ?[/tex]
To determine the force with which the whale will hit the ground, we use Newton's second law of Motion;
[tex]F = m * a[/tex]
We substitute our values into the equation
[tex]F = 1000kg * 9.8m/s^2\\\\F = 9800kgm/s^2\\\\F = 9800N[/tex]
Therefore, the force with which the whale will hit the ground is 9800 Newtons.
Learn more about Newton's law of motion: brainly.com/question/20066791
What is the potential energy of the 450 kg glass on the 18 m high desk?
Answer: 12 J
Explanation: because of the potential energy
A moving saw blade and wood are in contact and heat is produced from the kinetic energy and friction between the two objects. Describe all the possible places the RKE can transfer. Whats the answer
Answer:
The radiated heat from the kinetic energy is transferred speedily across the blade but not in the wood.
Explanation:
The moving saw blade is a metal and metals are very conductive as they have free valent electrons in their outermost shell. So the heat is transferred from the action point to the other end of the saw blade.
Unlike the saw blade, the wood is a poor conductor of heat and would slowly absorb the heat which may not translate the entire wood before the sawing is complete.
What voltage would produce a current of 100amps through an aluminum wire assuming that the re sistance of the wire is3.44×10-4 ohm
please please help i need to finish this test
A ball is thrown vertically upward with an initial velocity of 25 m/s. What is its velocity after 3 seconds in the air? (assume air resistance is negligible)
Answer:
-4.4 m/s
Explanation:
Since the ball is thrown upward, we can ignore the horizontal velocity. This means that the vertical velocity is 25 m/s. The vertical acceleration is -9.8 m/s^2 (g). This means that after 3 seconds, the velocity would've decreased by 9.8 m/s^2 * 3 s. This is 29.4 m/s.
This should be subtracted from the initial velocity:
25 m/s - 29.4 m/s = -4.4 m/s
Hope this helps!
At an ocean depth of 10.0m, a diver's lung capacity is 2.40L. The air temperature is 32.0°C and the pressure is 101.30 kPa. What is the volume of the diver's at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa?
Answer: The volume of the diver's at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa is 1.66 L
Explanation:
The combined gas equation is,
[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]
where,
[tex]P_1[/tex] = initial pressure of gas = 101.30 kPa
[tex]P_2[/tex] = final pressure of gas = 141.20 kPa
[tex]V_1[/tex] = initial volume of gas = 2.40 L
[tex]V_2[/tex] = final volume of gas = ?
[tex]T_1[/tex] = initial temperature of gas = [tex]32.0^0C=(32+273)K=305K[/tex]
[tex]T_2[/tex] = final temperature of gas = [tex]21.0^0C=(21+273)K=294K[/tex]
Now put all the given values in the above equation, we get:
[tex]\frac{101.30\times 2.40}{305}=\frac{141.20\times V_2}{294}[/tex]
[tex]V_2=1.66L[/tex]
The volume of the diver's at the same depth, at a temperature of 21.0°C and a pressure of 141.20 kPa is 1.66 L
1. A train is traveling on a straight section of track at constant speed. In 60
seconds it covers a distance of 1800 meters. What is the speed of the
train?
Answer:
30 mph
Explanation:
1800 divided by 60
When an object travels at a constant speed with zero acceleration it is known as uniform rectilinear motion. Then its velocity is given by:
v = d / t
Where d is distance and t is time. Evaluating:
v = 1800 m / 60 s
v = 30 m/sI need help with these questions :
(see image )
[tex]\huge\boxed{Theta=25.67}[/tex]
_____________________________________DATA:Range = R = 78m
Initial Velocity = [tex]V_i[/tex] = 30m/s
Angle(theta) = ?
_____________________________________SOLUTION:The Range is given by,
[tex]R =\frac{V_0^2}{g}Sin2(theta)\\\\78 = \frac{30^2}{10}Sin2(theta)\\\\Sin2(theta) = \frac{780}{900}\\\\Sin2(theta) = \frac{13}{15}\\\\Sin(theta) = \frac{13}{30}\\\\theta = Sin^{-1}\frac{13}{30}\\\\theta = 25.67^0[/tex]
_____________________________________Best Regards,'Borz'Why is it important to set a series of short-term goals?
It is positive self-talk.
It makes you feel guilty.
It forces you to exercise.
It ultimately helps you focus on your long-term goals.
Answer:
It ultimately helps you focus on your long-term goals
Explanation:
Answer:
Last option is the answer
Explanation:
So, to create an effective strategy to achieve your long term goals, you set several short term goals. Short terms goals act as a milestone in your journey to reach the long term goal of your life. They help you gauge how far you have come and how long you still have to travel to reach your ultimate destination.
A stone tied to a string is made to revolve in a
horizontal circle of radius 4 m with an angular
speed of 2 radians per second. With what
tangential velocity will the stone move off the
circle if the string cuts?
Answer:
The tangential velocity is 8 m/s
Explanation:
Uniform Circular Motion
It can be described as the motion of an object in a circle at a constant speed.
As an object moves in a circle, it continually changes its direction.
If the radius of the circle is r and the angular speed is w, then the tangential velocity is:
v = w.r
The stone is revolving in a circle of radius r=4 m with an angular speed of w=2 rad/s. The tangential velocity is:
v = 2 rad/s * 4 m
v = 8 m/s
A bowling ball is traveling with a velocity of 12m/s. Its momentum is 114 kgm/s. What is the mass of the bowling ball. Include the correct units in your answer.
Answer:
9.5 kgExplanation:
The mass of the bowling ball can be found by using the formula
[tex]m = \frac{p}{v} \\ [/tex]
p is the momentum
v is the velocity
From the question we have
[tex]m = \frac{114}{12} = \frac{19}{2} = 9.5 \\ [/tex]
We have the final answer as
9.5 kgHope this helps you
think of a famous person and gather information about him/her
Abraham Lincoln
Explanation:
hope it helps you a little
Pls help me
A cat is chasing a rat and moving at 0.8m per 2 seconds. Continuing at the same rate, the cat will have moved __ m in 3 seconds.
The distance should be 0.12m
Calculation of the distance:
Since A cat is chasing a rat and moving at 0.8m per 2 seconds.
And, the time taken should be 3 seconds
So, here the distance should be
= 0.8/2 * 3
= 0.4*3
= 0.12m
Hence, we can conclude that The distance should be 0.12m
learn more about rate here: https://brainly.com/question/11464983
a chair is several feet from a fireplace. The side facing the fireplace is warmer due to:
a. Conduction b. Convection c. radiation
c.
Explanation:!(*´∇`)ﾉ
Technician A says that the cooling system should be tested for leaks using a pressure-operated pressure pump. Technician B says that the freezing and boiling point of the coolant can be tested using a thermometer. Who is right?
Answer:
The correct option is;
Technician A only
Explanation:
Leaks in the cooling system parts such as the radiator cap can be tested with a pressure operated hand pump by attaching the pump cap to the pump with an adaptor and apply pressure enough for there to be a release of pressure at the cap.
The pressure added to the system should be maintained for up to two minutes. If the pressure drops quicker, then there is likely to be leaks in the system
The freezing and boiling point of the coolant is measured with an antifreeze tester which carries the appropriate apparatus to measure the coolants freezing and boiling points.
A person of weight mg, is standing on a scale in an elevator. What will the
scale read when the elevator is moving downward at a constant velocity?
A. more than mg
B. less than mg
C. equal to mg
Answer:
B. less than mg
Explanation:
A person's weight changes as he rides an elevator at a constant velocity. If the elevator is moving downward, the person's weight becomes lesser. He is considered to be in "free fall" due to gravity. However, the opposite happens when the elevator goes upward. The person will feel heavier because he is going against gravity. This means his weight is more than his actual weight. If the person will stand on an elevator that doesn't move, his weight will just be the same. All of these is due to Newton's Second Law of Motion where an object's acceleration relies on its force and mass.
The state of matter in which particles are arranged in the least organized manner is the
Answer:
gas
Explanation:
PLS MAKE ME AS BRAINLIST
Select the correct answer. When organizing your things, it is important to think of logical places to keep items.
A. True
B. False
false
can u make me brainleist
An Aichi D3A bomber, with mass of 3600 kg, departs from its aircraft carrier with a velocity of 85 m/s due east. What is the plane's momentum
Answer:
306000 is the answer.......
plz answer it......
.
plz
Answer:
Definitely C
Hope it helped!
(And I hope it's not wrong...lol)
i need to submit my homework in an hour, this is only question i cant solve. someone pls help!!
Hope this helps.......☺
A 75.0 kg person rides up and down in an elevator that starts from rest, accelerates from rest to 2.0m/s in 2.0s, continues at a constant velocity of 2.0m/s for 2.0s, and then comes to a stop from 2.0m/s in 2.0s. Calculate what the scale would read in each of the following situations. Show all work including free-body diagrams. Round off g to 10 m/s2.
Washington State is one of the northernmost states in the continental U.S., but still has relatively mild winters. This is because it -- D.-receives more solar energy A.-has mountain ranges B.-is located near the ocean C.-is a heavily populated state
Answer:
B.-is located near the ocean
Explanation:
Washington State is the northwest state in the continent of United State. Officially, this state is known as the State of Washington, named after the the 1st president of the United States, George Washington. It is one of the most socially liberal state of the USA.
The climate of the Washington state is much diverse due to the influence of the marine air and the mountain ranges in the state. The climate varies from east to west. It has mild winters as it is located near the Pacific ocean.
Question 5 of 10
A sodium atom loses an electron. What is the resulting particle?
A. An ion with a positive charge
B. An isotope with a negative charge
C. An isotope with no charge
D. An ion with a negative charge
Answer:
A. an ion with a positive charge
Answer:
A) An ion with a positive charge
MORE TO KNOW Sodium atom loses one electron and become CationIons is the atom or molecule having a charge on them Cation is positively charged ions Anion is negatiely charged ionsElements loses electrons to become Cation When they gain electrons they become anion Examples - Na+ , Mg + , Cl- Elements looses or gain electrons to complete its octet.When looking at liquids in a container, that have layered on one another;
the most dense liquid will be
a. at the top
b. in the middle
c. at the bottom
Answer: C. At the bottom
In your response, include the following key termsı mechanical energy, electrical energy, generator, electromagnetic induction, magnetic field, and electromotive force. (5 Points)
What are the two factors of energy?
how much mass or speed will the object have
