Answer:
I believe the answer is B. Reducing the angle of the ramp. ( sorry if wrong:)
A horse accelerates from rest for 1 s and covers a distance D. If instead the accelerates from rest with the same accelerations for 2 s will the distance it covers be equal to 2D, 4D, or 9D
Answer:
4D
Explanation:
We will use 2nd equation of motion in this question:
s = Vi t + (0.5)gt²
where,
s = distance covered
t = time taken
g = acceleration due to gravity
For t = 1 s:
s = D
Therefore,
D = (0 m/s)(1 s) + (0.5)g(1 s)²
D = 0.5g -------------- equation (1)
For t = 2 s:
s = D
Therefore,
s = (0 m/s)(1 s) + (0.5)g(2 s)²
s = 0.5g(4)
using equation (1):
s = 4D
therefore, correct answer is:
4D
A car runs along a horizontal path at speed of 20m/s.The driver observes the rain hitting his car at 60 to vertical.If rain is actually falling vertically then what is speed of rain drop
Answer:
The speed of the raindrop is 11.55 m/s.
Explanation:
We need to find the speed of the rain in the "y" direction. We have:
[tex]v_{r}[/tex]: speed of the raindrop at 60° (vertical) =?
[tex]v_{c}[/tex]: speed of the car = 20 m/s (in the "x" direction)
Hence, the speed of the car and the speed of the raindrop are related by:
[tex]tan(\theta) = \frac{v_{c}}{v_{r}}[/tex]
[tex] v_{r} = \frac{v_{c}}{tan(60)} = \frac{20}{tan(60)} = 11.55 m/s [/tex]
Therefore, the speed of the raindrop is 11.55 m/s.
I hope it helps you!
According to the question,
Speed of car, [tex]v_c = 20 \ m/s[/tex]Let,
The speed of rain be "y".As we know the formula,
→ [tex]tan (\Theta) = \frac{v_c}{v_r}[/tex]
or,
→ [tex]v_r = \frac{v_c}{tan (60)}[/tex]
By putting the values, we get
[tex]= \frac{20}{tan (60)}[/tex]
[tex]= 11.55 \ m/s[/tex]
Thus the above answer is right.
Learn more about speed here:
https://brainly.com/question/18076916
A B-52 bomber jet flies at a horizontal velocity of 286.2 m/s and at an altitude of 7500 m above the ground.
How far away horizontally should a payload be dropped to land on a target?
Answer:
you need to divide 7500/286.2
the inertial mass of an object is measured by exerting a force on the object and measuring the object's BLANK using an inertial balance
Answer:
acceleration
sorry i answered late
Energy; Resources and Forms
how do you measure joules ?
Answer:
joules = newtons x meters
Explanation:
Work is equal to the force that is exerted, multiplied by the distance over which it is exerted.
In equation form:
joules (work) = newtons (force) x meters (distance) ,
A joule is the unit of work.
Hope this helped!! :)
A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off. What force does the wall exert on the ball? 10 N to the left 10 N to the right more than 10 N to the left more than 10 N to the right
Given :
A ball strikes a wall. It exerts a force of 10 N to the left against the wall and bounces off.
To Find :
What force does the wall exert on the ball.
Solution :
We know, by third law of motion "every motion has equal and opposite reaction".
Ball exert a force of 10 N to the left against the wall.
So, by newton's third law of motion :
Wall will exert same force of 10 N in opposite direction i.e in right direction.
Therefore, force does the wall exert on the ball is 10 N to the right.
Hence, this is the required solution.
Answer:
10 N to the right
Explanation:
edge 2021
Here is what you can say if the crewmates saw you get someone.
Well let me tell you guys. Everything is made of atoms. THe thing is atoms don't touch. And humans are made of atoms. So technically we never touch.SO to answer your question no I did not slice white in half in electrical.
Answer:
ahh yes you are so smart and I hope you get a good job when you are older
Milk of magnesia is a slippery, bitter-tasting white substance that is commonly used as a laxative. If the pH of milk of magnesia is between 10 and 11, it can best be described as a
Answer:
a moderate base
Explanation:
Milk of magnesia is popularly known as magnesium hydroxide. Magnesium hydroxide Mg(OH)₂ is used as an anti-acid in toothpaste and medically as a mild laxative.
Its pH values range between 10- 11 on the pH scale.
A solution with pH value of 7 is neutral(i.e. neither acidic nor basic.
A pH value which is less than 7 is acidic while a pH value greater than 7 is basic.
For a pH value between 12 -14 on the pH scale is said to be a strong base.
Since Milk of magnesia Mg(OH)₂ pH values ranges between 10- 11 on the pH scale, it is known to be moderately basic.
What does it mean for objects to be at different temperatures?
Just two questions please answer.physics wave
While in a car at 4.47 meters per second a passenger drops a ball from a height of 0.70 meters above the top of a bucket how far in front of the bucket should the passenger drop the ball such that the ball will land in the bucket?
Answer:
1.7 m
Explanation:
[tex]v_x[/tex] = Velocity of ball in x direction = 4.47 m/s
[tex]u_y[/tex] = Velocity of ball in y direction = 0
g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
t = Time taken
[tex]s_y[/tex] = Vertical displacement = 0.7 m
[tex]s_y=u_yt+\dfrac{1}{2}gt^2\\\Rightarrow 0.7=0+\dfrac{1}{2}\times 9.81t^2\\\Rightarrow t=\sqrt{\dfrac{0.7\times 2}{9.81}}\\\Rightarrow t=0.38\ \text{s}[/tex]
Horizontal displacement is given by
[tex]s_x=v_xt\\\Rightarrow s_x=4.47\times 0.38\\\Rightarrow s_x=1.7\ \text{m}[/tex]
The passenger should throw the ball 1.7 m in front of the bucket.
The Hindus in India were the first use
as a placeholder. .
O letters
zero
O calculus
scientific theories
A box with a mass of 18 kg is pushed across the floor. It has coefficient of friction of 0.39. Calculate the force of friction it experiences.
Answer:
68.8 N
Explanation:
From the question given above, the following data were obtained:
Mass (m) of box = 18 Kg
Coefficient of friction (μ) = 0.39
Force of friction (F) =?
Next, we shall determine the normal force of the box. This is illustrated below:
Mass (m) of object = 18 Kg
Acceleration due to gravity (g) = 9.8 m/s²
Normal force (N) =?
N = mg
N = 18 × 9.8
N = 176.4 N
Finally, we shall determine the force of friction experienced by the object. This is illustrated below:
Coefficient of friction (μ) = 0.39
Normal force (N) = 176.4 N
Force of friction (F) =?
F = μN
F = 0.39 × 176.4
F = 68.796 ≈ 68.8 N
Thus, the box experience a frictional force of 68.8 N.
Newton is derived unit why
Answer:
Newton is derived unit
Explanation:
Because it depends upon three fundamental units i.e kg,m and s
Hope it helps you.
A Viking ship roller coaster at the fair has a mass of 36,000 kg. If at its peak it reaches a height of 20 m off the ground, how much gravitational potential energy does it have?
Answer:
7056 kJ
Explanation:
Given that,
Mass of a ship roller coaster is 36,000 kg.
It reaches a height of 20 m off the ground
We need to find the gravitational potential energy does it have. The formula for the gravitational potential energy ios given by :
E = mgh
g is acceleration due to gravity
E = 36,000 kg × 9.8 m/s² × 20 m
= 7056000 J
or
E = 7056 kJ
So, it will have 7056 kJ of gravitational potential energy.
A iPhone charger system producing 14.5 Volts with a current flow of 43.5 Amps. What is the circuit resistance?
Answer:
The resistance of the circuit is 0.[tex]\bar 3[/tex] Ω
Explanation:
The given parameters are;
The voltage the charger produces = 14.5 Volts
The current flow of the charger = 43.5 Amps
Therefore, the resistance of the circuit, R = Voltage V/(Current, I)
R = V/I = 14.5/43.5 = 1/3 = 0.[tex]\bar 3[/tex] Ohms
The resistance of the circuit = 0.[tex]\bar 3[/tex] Ohms
Which can be written with the symbol for the unit of resistance Ω as follows;
The resistance of the circuit = 0.[tex]\bar 3[/tex] Ω.
Just like Coke is a type of soda, __________ is a type of ___________.
A.concentration,.equilibrium
B..equilibrium, concentration
C.diffusion, osmosis
D.osmosis. diffusion
Answer:
osmosis diffusionExplanation:
ok it's correct
Define potential energy. Give its mathematical formula and SI unit.
Answer:
The type of mechanical energy that is possessed due to the virtue of motion or state of a body is known as potential energy.
Its formula: PE= mgh
Its SI unit is joule.
Hope it helps you..
Light is described as having a dual wave-particle nature. Which piece of evidence provides support for the model of light as a wave? (2 points)
Answer:
The evidence is : Light reflects when it hits a surface.
Explanation:
The meaning of dual wave particle nature is that light exhibits both wave and particle properties. This is to say that light is a particle in form of a photon and a wave due to flow of photons. The properties displayed by light such a reflection of light and scattering of light are possible due to the properties of small particles/photons.
Answer:
Light reflects when it hits a surface
Explanation:
An object has a net force. The net force points in the south west direciton. Knowing this, what can you can you conclude about the accleration, and velocity of the object
Answer:
1) The acceleration is in the SW direction.
2) It is not possible to make a conclusion regarding the direction of the velocity.
Explanation:
1)
According Newton's 2nd Law, the acceleration is directly proportional to the net force applied, and has the same direction than it.Since the net force points in the SW direction, so does the acceleration.2)
By definition, acceleration is the rate of change of the velocity with respect to time.Since acceleration is a vector, it can represent a change in the magnitude of the velocity (if it speeds up or if it is slows down), along the same direction (NW or SW in this case), and/or a change in the direction, as in the circular movement case, in which acceleration and speed are perpendicular each other. So, with the information that we have, we can't say in which direction the velocity points.A person rides a bike with a constant velocity of 2 m/s. If his total displacement is 10 meters, for how long was he riding?
Answer:
5s
Explanation:
i just know
A person rides a bike with a constant velocity of 2 m/s. If his total displacement is 10 meters, he was riding for 5 sec.
What is velocity?When an item is moving, its velocity is the rate at which its direction is changing as seen from a certain point of view and as measured by a specific unit of time. Uniform motion an object is said to have uniform motion when object cover equal distance in equal interval of time within exact fixed direction. For a body in uniform motion, the magnitude of its velocity remains constant over time.
Given in question a person rides a bike with a constant velocity of 2 m/s. If his total displacement is 10 meters,
Velocity = Displacement / time
2 = 10/time
time = 5 sec
A person rides a bike with a constant velocity of 2 m/s. If his total displacement is 10 meters, he was riding for 5 sec.
To learn more about velocity refer the link:
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You notice that when you turn off your bedroom lights, the kitchen lights can stay on. Based on this observation, what kind of circuit was used to wire the lights in your house? A. Parallel circuits because there are two or more paths for the current to flow. B. Series circuits because the current through each component is the same. C. Series circuits because there are two or more paths for the current to flow. D. Parallel circuits because the current through each component is the same.
Answer:
the correct answer is A
Explanation:
In a series circuit the current flows through the circuit and when it is opened at some point the current stops throughout the circuit.
In a parallel circuit, the current flows through the different branches of the circuit and when the current in one branch is interrupted, it continues to flow through the others.
In this exercises they indicate that the bedroom lights are turned off (the circuit was opened), but the kitchen lights are still on, therefore it is a parallel circuit with at least two branches, the current that circulates through each one depends on the existence on each branch.
Therefore the correct answer is A
which type of mater conduct heat?
Answer:
Copper is the best conductor
What is happening inside muscles when they become sore?
Answer:
When muscles are required to work harder than they're used to or in a different way, it's believed to cause microscopic damage to the muscle fibres, resulting in muscle soreness or stiffness. DOMS is often mistakenly believed to be caused by a build up of lactic acid, but lactic acid isn't involved in this process.
Explanation:
has an atomic number of 1
Answer:
The element H (Hydrogen) has an atomic number of 1.
Answer:
1 = H = Hydrogen
A force of 6.00 N acts in the positive direction on a 3.00 kg object, originally traveling at +15.0 m/s, for 10.0 s. (a) What is the object's change in momentum?
Answer:
60 kg m/s
Explanation:
Let [tex]a\;\; m/s^2[/tex] be the acceleration of the object.
As the acceleration of the object is constant, so
[tex]a=\frac {v-u}{t}\cdots(i)[/tex]
Given that applied force, F=6.00 N,
From Newton's second law, we have
[tex]F= m\times a[/tex],
[tex]\Rightarrow F=\frac {m(v-u)}{t}[/tex] [from equation (i)]
[tex]\Rightarrow Ft=m(v-u)[/tex]
[tex]\Rightarrow Ft=mv-mu[/tex]
[tex]\Rightarrow mv-mu=6\times 10[/tex] [given that time, t=10 s and F=6 N]
[tex]\Rightarrow mv-mu=60 kg \;m/s[/tex]
Here mv is the final momentum of the object and mu is the initial momentum of the object.
So, the change in the momentum of the object is mv-mu.
Hence, the change in the momentum of the object is 60 kg m/s.
The change in momentum of object is 60 kg-m/s.
Given data:
The magnitude of force is, F = 6.00 N.
The mass of object is, m = 3.00 kg.
The speed of object is, v = 15.0 m/s.
The time interval is, t = 10.0 s.
The change in momentum is mathematically equal to the difference between the final momentum and initial momentum of object. And it is obtained from the impulse-momentum concept as,
[tex]F=\dfrac{\Delta p}{t}\\\\\Delta p = F \times t[/tex]
Solving as,
[tex]\Delta p = 6.00 \times 10\\\\\Delta p =60.0 \;\rm kg.m/s[/tex]
Thus, we can say that the change in momentum of object is 60 kg-m/s.
Learn more about the change in momentum here:
https://brainly.com/question/904448
DESPERATE WILL GIVE BRAINLIST AND THANKS
The Cenozoic Era was the “age of the dinosaurs.”
Question 2 options:
True
False
Answer:
false
Explanation:
Answer:
false
Explanation:
The Cenozoic Era is the current Era it's also called the new life era. Dinosaurs appeared in the Triassic era.
part 1 of 2
Bill kicks a rock off the top of his apartment
building. It strikes a window across the street
18 m away.
The acceleration of gravity is 9.8 m/s?.
If the window is 19 m below the position
where Bill contacted the rock, how long was
it in the air?
Answer in units of s.
part 2 of 2
How fast was it moving when it left Bill's
foot?
Answer in units of m/s.
Answer:
I got you.. i'm in middle school and had that same question.
Explanation:
Refer to the diagram shown below.
The vertical distance traveled is
s = 25 m
The initial vertical launch velocity is zero.
Therefore
s = (1/2)*g*t²
where g = 9.8 m/s²
t = the time of flight, s
That is,
0.5*9.8*t² = 25
t² = 25/4.9 = 5.102
t = 2.26 s
Answer: 2.26 s
DESPERATE WILL GIVE BRAINLIST and thanks
Radiometric dating is a form of relative dating.
Question 4 options:
True
False
Answer: True
Explanation:
(i hope this helps sorry kinda late but i did not see any answers)but can i have brainlist
A body weighs less inside water
Answer:
Body weighs lesser in water because of the upward force (buoyant force) which acts on our body thereby reducing our actual weight. This is our apparent weight.
Explanation:
hope it helps
