Which table is it I’ll mark brainlest
Answer:
we need the graph to answer the question.
Help pls !!!
Which statement is true for nuclear reactions but not for chemical reactions?
Answer:
its c
Explanation:
which car has the most kinetic energy ??
A. a car mass 1400 kg with speed 4 m/s
B. a car mass 1300 kg with speed 3 m/s
C. a car mass 1500 kg with speed 5 m/s
D. a car mass 1200 kg with speed 2 m/s
it's C
because the faster an object moves the more kinetic energy it has.
Miles and Joselin are riding a two person long board down an extremely dangerous hill while Chloe watches in horror and Talia in delight. At the end of the hill Alex and Jason are holing a crash pad to stop the dynamic duo from falling off the cliff. If the riders have a combined mass of 200 kg and an acceleration of 30 m/s^2, what Force will they crash the mattress with? Use the correct Force for full credit.
Answer:
They will crash with the force of 6,000N
Explanation:
Force is equal to mass time acceleration. When we multiply 200 kg, the mass, and 30 m/s2, the acceleration, the answer is 6,000.
What kind of waves can cause the most damage on the earth's surface?
Answer:
Surface waves, in contrast to body waves can only move along the surface. They arrive after the main P and S waves and are confined to the outer layers of the Earth. They cause the most surface destruction. Earthquake surface waves are divided into two different categories: Love and Rayleigh.
Explanation:
Hope this helped Mark BRAINLIEST!!!
Answer:
Surface waves are the seismic waves that cause the most damage.
Explanation:
From the window of a house that is placed 15 m
high, a stream of water is thrown at 20 m/s with an
angle of 37° over the horizontal. Ignoring friction
with the air, calculate: (Consider g = 10 m/s 2 )
a) Distance from the base of the house at which the
water will fall.
b) Velocity at which the water will reach the
ground.
Answer:
a) 52.915 m
b) The vertical velocity is approximately 21.092 m/s
The resultant velocity is approximately 26.5 m/s
Explanation:
a) The height of the window in the house from which the water was thrown = 15 m
The speed of the stream of water thrown = 20 m/s
The angle at which the water was thrown = 37° over the horizontal
The acceleration due to gravity, g = 10 m/s²
a) The distance from the base of the house at which the water will fall is given as follows;
y = y₀ + u·t·sin(θ) + 1/2·g·t²
Where;
y = The vertical height reached
u = The initial velocity
t = Time of flight
From the point the steam of water is thrown, we get;
y₀ = 15 m
Therefore;
y = 15 + 20 × t × sin(37°) - 1/2 × 10 × t²
y = 15 + 20 × t × sin(37°) - 5 × t²
When y = 0, Ground level, we get
0 = 15 + 20 × t × sin(37°) - 5 × t²
5·t² - 20×sin(37°)×t -15 = 0
∴ t = (20 ×sin(37°) ± √((-20 × ·sin(37°))² - 4 × (5) × (-15)))/(2 × 5)
t ≈ 3.3128302, or t ≈ 0.906
Therefore, the time of flight of the water, t ≈ 3.3128302 seconds
The distance from the base of the house at which the water will fall = The horizontal distance travelled by the water, x
x = u·cos(θ)×t
∴ x = 20 × cos(37°) × 3.3128302 ≈ 52.915
The distance from the base of the house at which the water will fall = x ≈ 52.915 m
b) The velocity at which the water will reach the ground, 'v', is given as follows;
The vertical velocity, [tex]v_y[/tex] = u·sin(θ)·t - g·t
At the ground, t ≈ 3.3128302 seconds
∴ [tex]v_y[/tex] = 20 × sin(37) - 10 × 3.3128302 ≈ -21.092
The vertical velocity at which the water will reach the ground, [tex]v_y[/tex] ≈ 21.092 m/s (downwards)
The resultant velocity, v = √([tex]v_y[/tex]² + vₓ²)
∴ v = √(21.092² + (0 × cos(37°))²) ≈ 26.5
The resultant velocity at which the water will reach the ground, v ≈ 26.5 m/s.
4. Priya notices thet the pressure inside one of her car tyres is too low. She pumps up the tyre to a higher pressure. a) What happens to the number of particles in the car tyre? b) What happens to the distance between particles as pressure increase? c) One of the tyres gets a puncture(small hole) . What happens to the pressure inside the tyre?
Answer:
a) the number of particles increases
b) average distance between them should decrease
c) the number of particles decreases, the pressure must also decrease
Explanation:
a) When the girl pumps to increase the pressure inside the tire she introduces more particles. Therefore the number of particles increases
b) as the volume of the tire does not change and there are more particles, the average distance between them should decrease
c) When a hole is opened, some of the particles inside the tire come out, so as the number of particles decreases, the pressure must also decrease
12. You carry a lost puppy that weighs 30 N up a flight of stairs 10 m high.
a) Identify the energy transfer that occurred as you carried the puppy up the stairs.
Answer:
Explanation:
The puppy starts and ground level and goes up a flight of stairs 10 m weighs 30N. The weight doesn't change so the only thing that can is the height.
Energy change = F * d
Energy change = 30 * 10
Energy change = 300 J
A girl on a skateboard (total mass of 40kg) is moving at a speed of 10m/s at the bottom of a long ramp. The ramp is inclined at 20 degrees with respect to the horizontal. How far must she travel upward along the ramp before stopping?
What is the average speed of inchworm 1 at 2 minutes?
I made the chart as clear as I could.
Answer: 2
Explanation:
The average speed of the inchworm 1 at 2 minutes in the given graph is determined as 0.025 m/s.
What is average speed?The average speed of an object is the rate of change of displacement of the object with time.
The average speed of the inchworm 1 at 2 minutes is calculated as follows;
v = D/t
v = 3 m/(2 min x 60 s)
v = 0.025 m/s
Thus, the average speed of the inchworm 1 at 2 minutes is 0.025 m/s.
Learn more about average speed here: https://brainly.com/question/6504879
what will happen if you increse the amplitude of a drum hit
The sound is perceived as louder if the amplitude increases, and softer if the amplitude decreases. As the amplitude of the sound wave increases, the intensity of the sound increases. Sounds with higher intensities are perceived to be louder.
Which of the following is an example of static electricity?
O Lit light bulb
O Charging battery
O Lightning
O Movie streaming on TV
What device increases voltage?
A. generator
B. motor
C. step-down transformer
D. step-up transformer
Your answer would be C.
A step-up transformer is a transformer that raises voltage from main to secondary by having more secondary winding turns than primary winding turns.
Hope this helps; have a great day!
What is the charge of an ionic compound after an ionic bond is formed?
Answer:
Ionic bonds are formed between cation and anions . A cation is formed when a metal ion loses valence electron while an anion is formed when a non-metal gains a valence electron.
Inside a dark room, pull a strip
of Scotch tape from the roll
very quickly. What did you see?
Um veiculo aumenta sua velocidade de 15/s para 20m/s num intervalo de tempo de 10s.Nesse intervalo de tempo ,qual foi sua aceleração média?
Answer:
Aceleración media = 0.5 m/s²
Explanation:
Dados los siguientes datos;
Velocidad inicial = 15 m/s
Velocidad final = 20 m/s
Tiempo, t = 10 segundos
Para encontrar la aceleración;
Aceleración se puede definir como la tasa de cambio de la velocidad de un objeto con respecto al tiempo.
Esto simplemente significa que la aceleración viene dada por la resta de la velocidad inicial de la velocidad final a lo largo del tiempo.
Por lo tanto, si restamos la velocidad inicial de la velocidad final y la dividimos por el tiempo, podemos calcular la aceleración de un objeto. Matemáticamente, la aceleración viene dada por la fórmula;
[tex] Aceleracion = \frac{final \; velocidad - inicial \; velocidad}{tiempo}[/tex]
Sustituyendo en la fórmula, tenemos;
[tex] Aceleracion = \frac{20 - 15}{10}[/tex]
[tex] Aceleracion = \frac{5}{10}[/tex]
Aceleracion = 0.5 m/s²
Por tanto, la aceleración media es igual a 0.5 metros por segundo al cuadrado.
GIVING EASY BRAINLIEST PLEASE HELP!!
-if you answer correctly ill give you brainliest which will give you 26pts-
Answer:
Y
Explanation:
The fulcrum is the point where the scissor blades are joined together. The force or effort is the end or handle of the scissors. The parts of a pair of pliers are similar to the scissors.
Hey, can someone solve this for me? tysm
Answer:
The Answer is gonna be B. The normal force (magnitude and direction)
Answer:
solution given ;
mass[m]=55kg
acceleration due to gravity [g]=10m/s²
weight[W]=mg=55×10=550 Newton
Which image illustrates the bending of a wave as it passes into a new
Material?
A. A
B. B
C. C
D. D
Answer:
Option B.
Explanation:
The bending of a wave when it reaches the interface separating two media is called refraction of light.
In figure B, the wave initially in medium 1. Then it reaches the interface. After that it bends. It means the bending of light occurs in this case.
Hence, the correct option is (B).
A body contains charge of 10 micro coulomb. After conduction, the charge on the body becomes -2.8 micro coulomb. The number of electrons gained by this charged body
Answer:
[tex]n=4.5\times 10^{13}[/tex]
Explanation:
Initial charge, [tex]q_1=10\mu C[/tex]
After conduction, charge on the body becomes, [tex]q_2=-2.8\mu C[/tex]
We need to find the number of electrons gained by this charged body.
Net charge,
[tex]q=q_1+q_2\\\\=10+(-2.8)\\\\=7.2\ \mu C[/tex]
Let n be the number of electrons gained by this charged body. So,
[tex]q=ne\\\\n=\dfrac{q}{e}\\\\n=\dfrac{7.2\times 10^{-6}}{1.6\times 10^{-19}}\\\\=4.5\times 10^{13}[/tex]
So, [tex]4.5\times 10^{13}[/tex] electrons gained by this charged body.
A 75N horizontal force is sufficient to move a 150N box on a level road at a uniform speed. What is the coefficient of friction between the box and the road?
Answer:
[tex]\mu_k=0.5[/tex]
Explanation:
From the question we are told that:
Force [tex]F=75N[/tex]
Weight [tex]W=150N[/tex]
Generally the equation for coefficient of friction [tex]\mu_k[/tex] is mathematically given by
[tex]\mu_k=\frac{F}{mg}[/tex]
[tex]\mu_k=\frac{75}{150}[/tex]
[tex]\mu_k=0.5[/tex]
a change in earths total isolation would be caused by _____?
Answer:
sunspots
Sunspots are areas in the sun that has a magnetic field is about 2 thousand times stronger than Earth's. Also is much higher than anywhere else on the Sun.
Which applications, either for diagnostic purposes or for therapeutic purposes, involve the use of X-rays? Check all that apply.
CT scan
MRI
radiography
brachytherapy
laser eye surgery
radioisotope imaging
external beam radiation therapy
fluoroscopy
Answer:
1,3,7,8
Explanation:
Edge 2021
A strand of 10 lights is plugged into a outlet. How can you determine if the lights are connected in series or parrel
Answer:
C) Unscrew one light. If the other lights turn off, it's a series circuit.
Explanation:
THIS IS THE COMPLETE QUESTION BELOW;
A strand of 10 lights is plugged into an outlet. How can you determine if the lights are connected in series or parallel? A) Unscrew one light. If the other lights stay on, it's a series circuit. B) Unplug the strand. If the first light stays on, it's a series circuit. C) Unscrew one light. If the other lights turn off, it's a series circuit. D) Cut the strand in half. If the plugged in half stays on, it's a series circuit.
SERIES CIRCUIT
In this circuit, the components there are in the same path, the entire circuit has the same current, each of the components posses different voltage drop. Hence, failure of one components to work, there will be break in entire circuit then other components cease to work.
PARALLEL CIRCUIT
This circuit has equal voltage drop across all the components, any problem in a component will not has effect on other components.
Therefore, if one want to determine if a light connection is in series or in parallel, one of the light can be unplugged if others stop working it means it's series, if other works it's parallel.
If time is tripled and work remains the same the power will.
Answer:
power will three times decrease (one-third)
Explanation:
P = W / t
thus when work is constant, power is inversely proportional to time
so, when time is tripled, power is decreased to one-third
Un puente(construido de acero) que conduce hacia una bahía mide 1.30X10-3m entre sus torres de apoyo. ¿Cuánto se dilata el puente durante un día en el que la temperatura alcanza una diferencia de 30°C?
Answer:
ΔL = 0.429 m
Explanation:
The expression for linear thermal expansion is
ΔL = α L₀ ΔT
the coefficient of linear expansion of steel is 11 10⁻⁶ ºC⁻¹
the initial length of the bridge is L₀ = 1.30 10³ m and the temperature variation is ΔT = 30 ºC
calculate
ΔL = 11 10⁻⁶ 1.30 10³ 30
ΔL = 4.29 10⁻¹ m
ΔL = 0.429 m
Two equal charges of magnitude 1.1 x 10 -7 C experience an electrostatic force of 4.2 x 10-4 N. How far apart are the centers of the two charges (K=9X9Nm2/C2)
Answer:
0.51 m
Explanation:
From the question,
Applying coulomb's law,
F = kqq'/r²....................... Equation 1
Where F = Electrostatic force, q = magnitude of the first charge, q' = magnitude of the second charge, r = distance between the two charges, k = coulombs constant
making r the subject of the equation
F×r² = kqq'
r² = kqq'/F
r = √(kqq'/F).................. Equation 2
Given: F = 4.2×10⁻⁴N, q = q' = 1.1×10⁻⁷C, k = 9×10⁹ Nm²/C²
Substitute these values into equation 2
r = √(9×10⁹×1.1×10⁻⁷×1.1×10⁻⁷/4.2×10⁻⁴)
r = √(1.1×1.1×9/4.2)(10⁹×10⁻⁷×10⁻⁷×10⁴)]
r = √(2.59×10⁻¹)
r = √(0.259)
r = 0.508
r ≈ 0.51 m
why VR is always less than 1 in Third class lever?
How do we use pulleys in real life?
Answer:
Construction pulleys are used in order to lift and place heavy materials. Curtains at a theatre are moved using pulley systems that pull the curtains apart. Blinds on windows operate using a pulley system to move the blinds up and down.
We use pulleys for things like and elevators, cranes, and bikes.
Which is true about forensic testing? Forensic scientists must accurately interpret test results Evidence testing is no longer reliable All tests are fully automated Forensic scientists never make mistakes
Answer:
Forensic scientists must accurately interpret test results
Explanation:
Misinterpreting test results could mean someone being falsely accused of a crime which you would want to avoid.