Answer:
6997200
Explanation:
plz mark as the brainliest
Nikolas had an idea that he could use the compressed carbon dioxide in a fire extinguisher to propel him on his skateboard.
Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. What force would the fire extinguisher have to produce to propel Nikolas if he wanted to accelerate at a rate of 1.2 m/s2? Round your answer to the nearest whole newton.
60 N
Which of Newton’s laws did Nikolas have to use to calculate this force?
Answer:
I'm terrible at explaining so here's a screenshot, please do not listen to the other answer, it is wrong.
- Ripper
Explanation:
Answer:
C is the correct answer !!!
Explanation:
The time it takes for a dragster to cross the finish line is unknown. The dragster accelerates from rest at 26 m/s2 for a quarter-mile (402 m). What is the final velocity of the dragster?
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex] {v}^{2} - {v(0)}^{2} = 2.a.∆x[/tex]
[tex]v = final \: \: velocity[/tex]
[tex]v(0) = the \: \: velocity \: \: in \: \: the \: \: rest \: \: which \: \: is \: \: zero \\ [/tex]
[tex]a = acceleration[/tex]
[tex]∆x = covered \: \: distance[/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
[tex] {v}^{2} - ({0})^{2} = 2 \times 26 \times 402 [/tex]
[tex] v = \sqrt{2 \times 26 \times 402} [/tex]
[tex]v = \sqrt{20904} [/tex]
[tex]v = 144.58 \: \: \frac{m}{s} [/tex]
Done...
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
În ce raport de mase trebuie amestecate două cantități din același lichid, având temperaturile t1=10 grade Celsius, respectiv t2=65 grade Celsius, pentru a obține o temperatură de echilibru t=45 grade Celsius?
Răspuns:
7: 4
Explicaţie:
Formula pentru calcularea cantității de căldură absorbită este exprimată ca;
Q = mc∆t
m este masa substanței
c este capacitatea termică specifică
∆t este schimbarea temperaturii
Conform legii calorimetriei, căldura pierdută de substanța rece = căldura câștigată de substanța fierbinte.
Folosind formula
(mc∆t) rece = (mc∆t) fierbinte
McCw∆tc = MhCw∆th
Deoarece au aceeași capacitate de căldură specifică, se vor anula. Ecuația devine;
Mc∆tc = Mh∆th ...... 1
Pentru apa rece;
∆tc = 45 ° C - 10 ° C
∆tc = 35 ° C
Pentru apa fierbinte:
∆th = 65 ° C - 45 ° C
∆th = 20 ° C
Înlocuiți în ecuația 1;
Mc (35) = Mh (20)
35Mc = 20Mh
Luând raportul dintre masa apei reci și cea fierbinte:
Mh / Mc = 35/20
Mh / Mc = 7/4
Prin urmare, lichidul trebuie amestecat împreună în raportul 7: 4
Los satélites de televisión giran alrededor de la Tierra en una órbita de 42370 km de radio. a) ¿Cuánto vale la aceleración de la gravedad en esa órbita? (Resultado: g = 0,22 m/s2 ) b) ¿Cuánto pesará allí un satélite de 1200 kg? (Resultado: P = 264 N) Datos: G = 6,67 10-11 Nm2 /kg masa de la Tierra: 6 1024 kg
Answer:
(a) La aceleración de la gravedad en esa órbita es 0.22 [tex]\frac{m}{s^{2} }[/tex]
(b) Un satélite de 1,200 kg pesará allí 264 N.
Explanation:
(a) Cada punto del espacio tiene un valor del campo proporcional a la función, siguiendo el modelo de gravitación de Newton:
[tex]g=G*\frac{m}{r^{2} }[/tex]
donde m será masa, r la distancia entre los objetos y G la constante de gravitación universal, cuyo valor es [tex]G=6.672*10^{-11}\frac{N*m^{2} }{kg }[/tex]
En este caso:
m= 6*10²⁴ kgr=42,370 km= 42,370,000 mReemplazando:
[tex]g=6.672*10^{-11}\frac{N*m^{2} }{kg }*\frac{6*10^{24}kg }{(42,370,000 m)^{2} }[/tex]
Resolviendo, obtenes:
g= 0.22 [tex]\frac{m}{s^{2} }[/tex]
La aceleración de la gravedad en esa órbita es 0.22 [tex]\frac{m}{s^{2} }[/tex]
(b) La ley fundamental de la dinámica o segunda ley de Newton expresa que la fuerza neta que es aplicada sobre un cuerpo es proporcional a la aceleración que adquiere en su trayectoria. Esto se expresa matemáticamente como:
F= m*a
en donde F es fuerza neta , m la masa y a la aceleración.
El peso es la fuerza que ejerce la gravedad sobre una masa, por lo que se obtiene de manera análoga a la fuerza:
P=m*g
En este caso la masa m tiene un valor de 1,200 kg y la gravedad g un valor de 0.22 [tex]\frac{m}{s^{2} }[/tex].
Reemplazando:
P=1,200 kg*0.22 [tex]\frac{m}{s^{2} }[/tex]
Resolviendo:
P= 264 N
Un satélite de 1,200 kg pesará allí 264 N.
Jen had an average speed of 2.5 m/s when hopping on one foot. If she hopped for 5.0 seconds, for what distance was she hopping?
Explanation:
distance
speed =_________
time
distance = speed × time
= 2.5 × 5.0
distance = 12.5 m
A person travels by car from one city to another. He drives for 30.0 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h, and he spends 15.0 min eating lunch and buying gas. What is the average speed for the trip?
Answer:
53.53 km/h
Explanation:
Given that the person drives for 30.0 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h, and he spends 15.0 min eating lunch and buying gas.
So, the total time to complete the journey is
t=30+12+45+15=102 min
[tex]=\frac{102}{60}=1.7[/tex] hours
As distance=(speed)x(time), so
the distance covered in 30 minutes with a speed of 80 km/h
[tex]d_1=80 \times \frac{30}{60}=40[/tex] km.
The distance covered in 12 minutes with a speed of 105 km/h
[tex]d_2=105 \times \frac{12}{60}=21 km[/tex].
The distance covered in 45 minutes with a speed of 40 km/h
[tex]d_3=40 \times \frac{45}{60}=30 km[/tex].
So, to the total distance covered is
[tex]d=d_1+d_2+d_3[/tex]
[tex]=40+21+30=91 km[/tex]
As the average speed = (Total distance covered)/(Total time taken)
So, the average speed for the whole journey
[tex]=\frac{d}{t}[/tex]
[tex]=\frac{91}{1.7}= 53.53 km/h[/tex].
Hence, the average speed for the trip is 53.53 km/h.
when a car suddenly stops,the objects in the backseat are thrown forward.this is explained by-
A.Newton's first law of motion
B.Newton's second law of motion
C.Newton's third law of motion
D.the universal law of gravitation
Answer:law of interia(1st law)
Explanation:
PLEASE HELP THE question on picture
Vertical:
(20 m/s) sin(25º) ≈ 8.45 m/s
Horizontal:
(20 m/s) cos(25º) ≈ 18.1 m/s
the faster particles move the less kinetic energy they have true or false
Answer:
False
Explanation:
You get more kinetic energy the more the particles and less kinetic energy with less particles
What is one physical benefit that can be obtained from participating in field events?
A) strengthen balance
B) better sleep pattern
C) increase capacity for learning
D) all of the above
Answer:
D
Explanation:
It does all three
find acceleration of block and tension in strings if m1 =8kg m2= 4kg and take g=10m/s²
[tex]\sf{m_1}[/tex] = 8kg
[tex]\sf{m_2}[/tex] = 4kg
g = 10m/s²
[tex]\large\bold{\underline{\underline{To \: Find:-}}}[/tex]→Acceleration of block
→Tension in strings
[tex]\large\bold{\underline{\underline{Solution:-}}}[/tex]Let, the two equation will be ,
[tex]\leadsto[/tex] 8g - T = 8a ..... Equation no (1)
[tex]\leadsto[/tex] T - 4g = 4a ..... Equation no (2)
Putting the value of equation no (1) and (2) we get,
[tex]\implies[/tex] 4g = 12a
[tex]\implies[/tex] 4 × 10 = 12a
[tex]\implies[/tex] 40 = 12a
[tex]\implies[/tex] a = [tex]\sf\dfrac{\cancel{40}}{\cancel{12}}[/tex]
[tex]\dashrightarrow[/tex] a = [tex]\dfrac{10}{3}[/tex]
Again, we have to putting the value of a in the equation no (2) we get,
[tex]\implies[/tex] T - 4g = 4 × [tex]\dfrac{10}{3}[/tex]
[tex]\implies[/tex] T - 4 × 10 = 4 × [tex]\dfrac{10}{3}[/tex]
[tex]\implies[/tex] T - 40 = [tex]\dfrac{40}{3}[/tex]
[tex]\implies[/tex] T = [tex]\dfrac{40}{3}[/tex] + 40
[tex]\implies[/tex] T = [tex]\dfrac{40 + 120}{3}[/tex]
[tex]\dashrightarrow[/tex] T = [tex]\dfrac{160}{3}[/tex] N
[tex]\therefore[/tex] Acceleration of block = [tex]\dfrac{10}{3}[/tex] m/s².
And, Tension in strings = [tex]\dfrac{160}{3}[/tex] N
Light travels in a transparent material at 2.5 x 10 m/s. Find the index of refraction of the
material.
We have that for the Question "Light travels in a transparent material at 2.5 x 10 m/s. Find the index of refraction of the material." it can be said that
From the question we are told
Light travels in a transparent material at 2.5 x 10 m/s. Find the index of refraction of the material.
Generally the equation for the index of refraction is mathematically given as
[tex]n=\frac{C}{v}\\\\Therefore\\\\n=\frac{3*10^8}{2.5 * 10 }\\\\n=12000000\\\\[/tex]
Therefore
The index of refraction of the material is
n=12000000
For more information on this visit
https://brainly.com/question/23379286
Athlete’s foot is also called...
A.) pedicure sickness Not Quite!
B.) runner’s bacteria Not Quite!
C.) toe virus Not Quite!
D.) tinea pedis
Answer:
Your answer is: D) Tinea Pedis
Explanation:
Hope this helped : )
A family decides to travel from
Watsonville, CA to Guadalajara, Mexico
for the holidays. The family has to
travel 2,172 miles. The trip takes them a
total of 39.5 hours. What is their
velocity?
hey pls help with this HDJSJDH im rlly bad at this kinda stuff :,) i'll mark the correct answer brainliest
Answer:
A. Cue, White Ball, Blue Ball
Explanation:
Visualize in which order things are being hit
A stunt man launches a car from the edge of a cliff horizontally. If he is launching off a
30-meter high cliff and must hit a mark 268-meters down range, with what speed
must he leave the cliff?
Answer:
All i got to say is that he is dead dead
Explanation:
What is the mass of a falling rock if it produces a force of 147 N with an acceleration of 9.8 m/s2?
Answer:
15 kgExplanation:
The mass of the object can be found by using the formula
[tex]m = \frac{f}{a} \\ [/tex]
f is the force
a is the acceleration
From the question we have
[tex]m = \frac{147}{9.8} \\ [/tex]
We have the final answer as
15 kgHope this helps you
HELP PLEASE
A load is a device that changes electrical energy into other forms of energy. Which load converts electrical energy into thermal energy by passing an electric current through a high-resistance material?
A.
Hand-powered generator
B.
Toaster
C.
Fan
D.
Electrical drill
Answer:
A toaster because you plug it up for electric energy and heat to toast it
Which statement is supported by the information in the diagram and table below?
Answer:
a
Explanation:
a
What is the speed of a car that
accelerates at a rate of 10 m/s2 for a
total of 25 seconds?
Answer:
250 m/sExplanation:
The speed of the car can be found by using the formula
v = a × twhere
a is the acceleration
v is the speed
t is the time
From the question we have
v = 10 × 25
We have the final answer as
250 m/sHope this helps you
Which of the following statements best describes the corn plants below?
Answer:
The Bt gene is inserted into one plant cell by using a bacterial plasmid.
Explanation:
A rubber-wheeled 50 kg cart rolls down a 35 degree concrete incline. Coefficient of rolling friction between rubber and concrete is = 0.02. (a) What is the cart's acceleration if rolling friction is neglected? (b) What is the cart's acceleration if rolling friction is included?
Answer:
(a) 5.62 m/s²
(b) 5.46 m/s²
Explanation:
The given values are:
mass,
m = 50 kg
angle
= 35°
(a)
If friction neglected,
⇒ [tex]F_x=mgSin \theta=ma[/tex]
⇒ [tex]a_x=gSin \theta[/tex]
[tex]=9.8 \ Sin35^{\circ}[/tex]
[tex]=5.62 \ m/s^2[/tex]
(b)
If friction present,
⇒ [tex]F_x=mgCos \theta[/tex]
⇒ [tex]F_x=mgSin \theta-\mu_r mgCos \theta[/tex]
⇒ [tex]a=gSin \theta-\mu_rgCos \theta[/tex]
[tex]=9.8 \ Sin35^{\circ}-0.02\times 9.8 \ Cos30^{\circ}[/tex]
[tex]=5.46 \ m/s^2[/tex]
Space-shuttle astronauts experience accelerations of about 35 m/s2 during takeoff. What force does a 75 kg astronaut experience during an acceleration of this magnitude?
Answer:
The answer is 2625 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 75 × 35
We have the final answer as
2625 NHope this helps you
What is the speed of a
rocket that travels
8,000m in 13 seconds?
Answer:
speed of rocket=615.38m/s
Explanation:
When dribbling you should?
a. Use both feet.
b.Use frequent small touches of the ball.
C.Protect the ball with your body.
D. All of the above.
Marlene loves astronomy and has enrolled in an online course to learn more about space. The course gives Marlene access to a digital classroom.
What does this enable her to do? Check all that apply.
discuss the solar system with others in the class
attend a field trip to a planetarium at a local college
upload an amateur video of a shooting star
make a presentation about her favorite planet
take notes, tests, and quizzes
watch instructional videos made by a teacher
Answer:
A E and F are the correct answers
Explanation:
Answer:
A E F are correct
Explanation:
If your body were a tall building, your skeleton would be
The unit of force is the newton (N). One newton is the force required to accelerate a 1-kg object at a rate of 1 m/s2. Suppose each fan supplies a force of 2 N.
Answer:
Explanation:
According to Newton's second law of lmotion
Force = mass × acceleration
Given
Mass = 1kg
Force = 2N
Required
Acceleration of the 2N body
From the formula
Acceleration = Force/mass
Acceleration = 2N/1
Acceleration = 2m/s²
When the energy of a wave increases, what happens to the amplitude?
Answer:
The energy transported by a wave is directly proportional to the square of the amplitude. So whatever change occurs in the amplitude, the square of that effect impacts the energy. This means that a doubling of the amplitude results in a quadrupling of the energy.
Explanation:
When the energy of a wave increases, the amplitude also increases. This is because the amplitude of the wave is directly proportional to the energy of a wave.
What is the amplitude of a wave?The amplitude of a wave may be defined as the maximum displacement or distance moved by a point on a vibrating body or wave measured from its equilibrium position. It is equal to one-half the length of the vibration path.
It is the principle of physics that when the amplitude of the wave is higher, the energy also gets higher. To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.
Therefore, when the energy of a wave increases, the amplitude also increases. This is because the amplitude of the wave is directly proportional to the energy of a wave.
To learn more about Energy and amplitude, refer to the link:
https://brainly.com/question/19036728
#SPJ6
The lens in the eyepiece of a reflecting telescope breaks. How will this most affect the function of the telescope?
A. Magnified images will appear upside down. B. Magnified images will not be created.
C. Light from distant objects will not be captured.
D. Light rays will not be sent to the eyepiece.
Answer:
B
Magnified images will not be created.
Explanation:
I did it and this was the correct answer
Answer:
B is correct the person above me is also correct. Hope this helps
Explanation:
