Answer:
The speed of the faster ship is 22.5 m/s
Explanation:
The length of the ships are;
Ship 1 = 200 m
Ship 2 = 100 m
The time it takes for the ships to completely cross each other when travelling in opposite directions = 10 seconds
The time it takes both ships to cross each other when travelling in the same direction = 25 seconds
Let x represent the speed of the first ship, ship 1, and y represent the speed of the second ship, ship, 2, we have;
(x + y) × 10 = 200 + 100 = 300
10·x + 10·y = 300...(1)
(x - y) × 20 = 200 + 100 = 300
20·x - 20·y = 300...(2)
Multiply equation (1) by 2, to get;
(x + y) × 10 × 2 = 300 × 2
20·x + 20·y = 600...(3)
Adding equation (1) to equation (3) gives;
20·x + 20·y + 20·x - 20·y = 600 + 300
40·x = 900
x = 900/40 = 22.5
x = 22.5
The speed of the first ship, ship 1 = x = 22.5 m/s
From equation (1), we have;
10·x + 10·y = 300
y = (300 - 10·x)/10 = (300 - 10×22.5)/10 = 7.5
y = 7.5
The speed of the second ship, ship 2 = y = 7.5 m/s
Therefore, the faster ship is ship 1 with a speed of 22.5 m/s
Why does the height of the second hill effect the ability of the coaster to go safely around the loop?
help asap i have no clue what i am doing LOL
Answer:
no3. is is the first bubble answer, no4. is the middle answer
Explanation:
A force of 10N is making an angle of 300 with the horizontal. Its horizontal components will be
Answer: 5N
Explanation:
Horizontal component is the force that is applied as a result of the diagonal application of force.
here in this case,
given diagonal force =10N.
angle= 30°
horizontal component is found using trigonometry..
so,
A vector of magnitude 10 N is provided.
It is at an angle of 30° to the + x axis.
To find:
The components along the x and y axis.
Calculation:
Along x axis:
F(x) = F cos(θ)
=> F(x) = 10 × cos(30)
=> F(x) = 10 (√3/2) = 5√3N
Along y axis:
F(y) = F sin(θ)
=> F(y) = 10 sin(30°)
=> F(y) = 10 × ½
=> F(y) = 5 N.
Additional information:
1. A vector is a quantity that can be defined with both magnitude and direction.
2. Since force is a vector, we are able to break it down into components along chosen axis.
difference between of echo and reverberation
Answer:
A difference between of echo and reverberation is described below in details.
Explanation:
Here's a piece of immediate information: An echo is an individual consideration of a soundwave off a horizon exterior. Reverberation is the consideration of sound waves generated by the superposition of the before-mentioned echoes. ... A reverberation can happen when a sound wave is displayed off a nearby covering.
15 pointsss please help meeeeeeeeeee
The velocity of an object can be calculated as:
starting velocity + (_____________________ * delta-t)(2.5 Points)
(one option)
A. acceleration
B. displacement
C. instantaneous velocity
D. average velocity
Answer: D. average velocity. i'm not sure if this is right but i remember doing this last week
Explanation:
Two football players have the same momentum. One player with a mass of 100 kg is moving at a velocity of 4 m/s. If the second player is moving with a speed of 5.5 m/s, what must his mass be
Answer:
The mass of the second player is 72.73 kg
Explanation:
Given;
mass of the first player, m₁ = 100 kg
velocity of the first player, u₁ = 4 m/s
velocity of the second player, u₂ = 5.5 m/s
let the mass of the second player = m₂
Since they have equal momentum, the mass of the second player will be obtained by equating their momentum.
m₁u₂ = m₂u₂
100 x 4 = 5.5m₂
400 = 5.5m₂
m₂ = 400 / 5.5
m₂ = 72.73 kg
Therefore, the mass of the second player is 72.73 kg
if bananas are curved because they grow towards the sun ☀️so say if a was born towards the sun would i have been a curved baby or what
ಠ_ಠ Hey, hang on.. you might've made a discovery. Nobody has tested it so how do we know? ಠ_ಠ
Answer:
It's because of the sun! Bananas are curved so they can retrieve sunlight. Bananas go through a process called 'negative geotropism'. ... So, bananas do not grow directly towards the sun rays but grow upwards to break through the canopy.
R 1 = 4 Ω, R 2 = 4 Ω и R 3 = 6 Ω?
Answer:
2n answer of 6
place it at the place of ?mark
An object is in free fall. After 10 seconds calculate the distance fallen? *
A diver jumps off a 60 m cliff with an initial horizontal velocity of 3m/s. Find the time needed to reach water?
Answer:
9.81 × 10 = 98.1 meters
vertical displacement is s=1/2 at^2 + vt
initial vertical velocity is 0 so s=1/2 at^2
a in this instance is gravitational acceleration so 60m= 1/2 (9.81)t^2
solve for t, t = 3.497s. //I corrected this answer as just now I misread horizontal as vertical.
*For free fall,
Initial velocity (u) = 0
g = 9.8m/s²
time(t) = 10s
Using the second equation of free fall;
s = ut + 1/2gt²
where 's' is the distance fallen.
s = 0(10) + 1/2(9.8)(10)²
s = 1/2(9.8)(100)
s = 490m.
*Initial horizontal velocity (Ux) = 3m/s
Initial vertical velocity (Uy) = 0
since it did not start with any vertical velocity.
Using the second equation of vertical downward motion:
h = Uyt + 1/2gt²
where h is the height of the cliff = 60m.
g = 9.8m/s²
60 = 0(t) = 1/2 (9.8)(t²)
60 = 4.9t²
t = √(60/4.9) = 3.5s.
Help? anyone? plz?
What was the atmosphere most heated by?
radiation
conduction
wind
convection
Answer:
Explanation:
The answer is radiation.
what mass of lead has the same volume as 1600 of alcohol ( density of lead =11300kg\m³ and density of alcohol=790kg\m³)
The mass of lead = 22,939 kg
Further explanationGiven
mass alcohol=1600 kg
The density of lead =11300kg\m³ and density of alcohol=790kg\m³
Required
mass of lead
Solution
volume of alcohol[tex]\tt V=\dfrac{mass}{\rho}\\\\V=\dfrac{1600}{790}\\\\V=2.03~m^3[/tex]
the volume of lead=volume of alcohol=2.03 m, so the mass of lead :
[tex]\tt m=\rho\times V\\\\m=11300\times 2.03\\\\m=22,939~kg[/tex]
What is the effect of increasing velocity on EK? I need this ASAP and in CER paragraph form.
Answer:Because kinetic energy is proportional to the velocity squared, increases in velocity will have an exponentially greater effect on translational kinetic energy. Doubling the mass of an object will only double its kinetic energy, but doubling the velocity of the object will quadruple its velocity.
Explanation:
1. Which of the following air pollutants combines with haemoglobin in our blood and renders it incapable to
transport oxygen within our body?
a) Carbon dioxide
b) Carbon monoxide
c) Oxide of sulphur
d) CFCs
Pretend you are explain net force to someone much younger than you. Explain how to calculate net force and how the net force determines the object’s motion.
Answer:
you can tell them it is the amount of "push" on an object then you can explain using a soccer ball being kicked or a cart being pushed
Explanation:
What's the frequency of a wave with a wavelength of 10 and velocity of 200m/s?
Answer:
[tex]\boxed {\boxed {\sf 20 \ Hz}}[/tex]
Explanation:
The frequency of a wave can be found using the following formula.
[tex]f=\frac{v}{\lambda}[/tex]
where f is the frequency, v is the velocity/wave speed, and λ is the wavelength.
The wavelength is 10 meters and the velocity is 200 meters per second.
1 m/s can also be written as 1 m*s^-1Therefore:
[tex]v= 200 \ m*s^{-1} \\\lambda = 10 \ m[/tex]
Substitute the values into the formula.
[tex]f=\frac{200 \ m*s^{-1}}{10 \ m}[/tex]
Divide and note that the meters (m) will cancel each other out.
[tex]f=\frac{200 \ s^{-1}}{10 \ }[/tex]
[tex]f=20 \ s^{-1}[/tex]
1 s^-1 is equal to HertzTherefore, our answer of 20 s^-1 is equal to 20 Hz[tex]f= 20 \ Hz[/tex]
The frequency of the wave is 20 Hertz
Why does it take more effort to make a bowling ball accelerate 25m/s^2 than to make a tennis ball accelerate 25m/s^2? Make sure to include witch law explains this.
Answer:
In explanation
Explanation:
This question can be explained by using Newton Second Law of motion:
[tex]F = ma[/tex]
where,
F = Force applied
m = mass of object
a = acceleration of object
We are given a constant acceleration of 25 m/s² in case of both bowling ball and tennis ball.
Therefore,
[tex]F = (25m/s^2) m\\[/tex]
It is clear from this equation that for constant acceleration, the force required for the object is directly proportional to the mass of the object.
Since, the mass of bowling ball is greater than the tennis ball. Therefore, bowling ball takes more effort than tennis ball to accelerate to 25 m/s²
Define Force
Check all that apply
Answer:
Push or pull
Explanation:
Dylan is set to receive a football kickoff. After being kicked, the ball goes up to a height of 55m before starting back down. How much time does he have before the ball comes back down?
Answer:
Explanation:
Answer:
There was no anwser
Explanation:
because dylan did not anwser
What is the chemical formula for sulfur trioxide? O SO3 O SIO3 8 O SO O SIO
Sulfur trioxide/Formula
SO3
this is what i looked up and got
Can some one help Please im not good at sports!!!!
Answer:
I think its tennis but im not sure
Explanation:
This PE I need help real quick
Answer:
Muscular helps you move while Cardiovascular helps you breathe, not move. Hope this helps, I tried my best :)
Explanation:
Muscular endurance relates to how your body is able to move, your muscles.
Cardiovascular is how your body supplies blood and helps you breathe, (an organ in this system is heart) :)
does anyone know the answers to these ?
5. A cycle accelerates from rest at a constant acceleration of 0.4m/s/s for 20 seconds then
stops pedalling and slowed to standstill at constant deceleration over distance of 260m.
Calculate:
a. Distance travelled by cyclist in the first 20seconds
b. The speed of the cyclist at end of this time
Answer: oh my. I just had the answer in my head but its gone now
Explanation:
Which term is described as a wave that is not confined to the space along the medium?
tsunami
standing wave
traveling wave
breaking wave
(there will be more Q's about this :\ )
Answer: Traveling wave
Explanation:
A 2100 lb (1 kg=2.2 lbs) car is using 4500 N of traction in order to move with a constant
velocity of 67 mph (29.8 m/s). What is the acceleration of this 9300 N vehicle?
Answer:
[tex]a = 0\ m/s^2[/tex]
Explanation:
The acceleration of a body is defined as the change in velocity of an object, with respect to time. So, in order to produce and acceleration in any object, the velocity of that object must change. And, if the velocity of the object is not changing with respect to time, then the object is said to have a uniform motion. The acceleration of the object in such uniform motion is always zero. Because the change in velocity is zero.
[tex]acceleration = change in velocity/time\\acceleration = 0 / time\\acceleration = 0 m/s^2[/tex]
Since, the car in this case is moving with a constant speed. Therefore, its acceleration will also be zero.
a = 0 m/s²
Can someone please help me with my physics hw
Which of the following is NOT true of all the inner planets?
A
They are made of solid rock.
B
They are called gas giants.
C
They do not have rings.
D
They have impact craters.
Hi there! :)
[tex]\large\boxed{\text{B. They are called gas giants.}}[/tex]
In the solar system, we can categorize the planets as such:
Inner planets: Mercury, Venus, Earth, Mars
Outer planets: Jupiter, Saturn, Uranus, Neptune
The Inner planets are the only planets that consist of solid rock. They also do not have rings and have impact craters due to their early formation.
In comparison, all of the outer planets are primarily made up of gaseous material and contain rings.
Therefore, the correct choice is B.
what does this graph represent
Answer:
I think it represents the center of a right angle..?
In the circuit shown above, the current through the ammeter is 20 mA and the voltmeter indicates 1.0 V. What is the current through the 40 resistor?
A. 7.5mA
B. 10mA
C. 20mA
D. 40mA
Answer:
20mA
Explanation:
because it is connected in series with the ammeter
The current through the 40Ω resistor in the given circuit is 20mA, which is explained below.
Current through the resistors:The volate across resistor R is 1V, as indicated by the voltmeter.
Since the potential of the battery is 3V, according to Kirchoff's voltage law, the voltage drop across 20Ω resistors must be 1V each since they are indentical.
Let a total current I passes through 20Ω resistor as it is connected to the battery in series. From Ohm's law:
20Ω × I = 1V
I = 50mA
Now the current indicated by the ammeter is 20mA which splits according to the reistors of 15Ω and 30Ω which are connected in parallel. Then again the current adds up to 20mA when leaving the set of parallel resistors, through the 40Ω resistor.
So the current through the 40Ω resistor is 20mA
Learn more about Kirchoff's voltage law:
https://brainly.com/question/86531?referrer=searchResults
You paddle a canoe with a force of 325 N. You and the canoe have a
combined mass of 250 kg. What is the acceleration of the canoe?
A. 0.8 m/s2
B. 0.3 m/s2
C. 1.9 m/s2
D. 1.3 m/s2
