Ned is learning about cells in science class. He drew a picture to model a cell. What can he show with his cell drawing?
A)
how big a cell is
B)
how fast cells grow
c)
what cells do to move
D)
what the cell parts are

Answer:

* If we increase the distance traveled before stopping, the forces decrease significantly,

* If we decrease the height of the fall by grabbing the net to slow down.

* Creating a process of absorption of force in the shoes, through the deformation of the elastic soles.

Explanation:

When basketball players jump to place the ball in the net they see from a good height, when they hit the ground, strong tensions are produced in the bones and bonds.

Applying science to this case of fall, we can suggest several processes to decrease the forces on impact.

* If we increase the distance traveled before stopping, the forces decrease significantly,

* If we decrease the height of the fall by grabbing the net to slow down.

* Creating a process of absorption of force in the shoes, through the deformation of the elastic soles.

By designing shoes that have some degree of force absorption, it is possible to significantly reduce the stress on the player.

Answer:Final volume after pressure is applied=4,292cm3

Explanation:

Using the bulk modulus formulae

We have that The bulk modulus of waTer is given as  

K =-V dP/dV

Where  K, the bulk modulus of water = 2.15 x 10^9N/m^2

2.15 x 10^9N/m^2= - 4,300 x  4 × 106N/m2 / dV

dV = - 4,300 x  4 × 10^6N/m^2/ 2.15 x 10^9N/m^2

dV (change in volume)= -8.000cm^3

Final volume after pressure is applied,

V= V+ dV

V= 4300cm3 + (-8.000cm3)

=4300cm3 - 8.000cm3

Final Volume, V =4,292cm3

Answer:

horizontal velocity vh = 6*cos(30°) = 6*(√3)/2 = 3√3 m/s

initial vertical velocity vv = 6*sin(30°) = 6/2 = 3m/s

Using s = ut + at2/2 for change in vertical distance in time t, with acceleration a (-9.8m/s2) and initial velocity u (vv = 3m/s) we have

0 = 3*t - 9.8*t2/2 or t = 6/9.8 s (ignoring the t = 0 solution, which just represents staying still!).

The horizontal distance in time t is vh*t or 3√3*6/9.8 m

Explanation:

[tex] \LARGE{ \underline{ \tt{Required \: answer:}}}[/tex]

We have:

We need to find:

Solution:

According to Newton's 2nd law of motion, or quantitative measure of Force:

Using this,

➝ F = ma

➝ 9N = 3 kg × a

➝ a = 9/3 m/s²

➝ a = 3 m/s²

Hence,

⛱️ [tex] \large{ \blue{ \bf{FadedElla}}}[/tex]

Answer:

Theory

Explanation:

Theory is a term that is used often in academic work or scientific research to explain certain things or conditions established on universal principles or laws.

It is used to describe the "why and how" or the reason behind the occurrence of a situation.

Hence, it is correct to conclude that THEORY is "an explanation of the relationships among particular phenomena."

Answer:

E) Theory

Explanation:

Edge 2020

Brainliest?

Answer:

wavelength =  0.01 m

distance = 162.8 m

Explanation:

Given that;

Speed of sound in water = 1,480 meters per second

Frequency of ultrasound = 125KHZ

From=

v=λf

v= speed of sound

λ= wavelength of sound

f= frequency of sound

λ= 1,480 ms-1/125 * 10^3 Hz

λ= 0.01 m

From

v = 2x/t

where;

v= velocity of sound in water

x= distance traveled

t = time taken

x = vt/2

x = 1,480 ms-1 *  0.220 s/2

x= 162.8 m

Answer:

correct is b  7N

Explanation:

The torque is

         Στ = I α

torque

      τ = F x R

bold, indicate vectors. The magnitude of torque is

    τ = F R sin θ

in this case the angle is 90º so sin 90 = 1

     τ = F R

The moment of inertia of a cylinder

    I = ½ M R²

substitute

      F R = ½ M R² α

      F = ½ M R α

reduce to the SI system

     R = 7 cm (1m / 100cm) = 0.07 m

calculate

      F = ½ 2 0.07 100

      F = 7 N

Answer:

9.55m

Explanation:

From T = 2π√L/g ........ 1

Where T is the period

L is the length of the string and g is the acceleration due to gravity = 9.8m/s^2

Given that,

Mass of ball = 227g

The ball makes 5 oscillations in 31 s.

T = 31/5

T = 6.2s

Solving for L from equation 1

T = 2π√L/g

Square both sides

T^2 = 4π^2×L/g

T^2×g = 4π^2×L

Make L the subject

L = T^2*g/4π^2 ......... 2

Now, substitute the values into equation 2

L = 6.2^2 × 9.8/4×3.14^2

L = 38.44*9.8/39.4384

L = 376.712/39.4384

L = 9.55m

Hence, the length of the string is 9.55m

Answer:

The algorithm

Step 1: Start

Step 2: Input Radius

Step 3: While Radius < = 0

                 Input Radius

Step 4: Pi = 3.14

Step 5: Perimeter = 2 * Pi * Radius

Step 6: Area = Pi * r^2

Step 7: Print Area, Perimeter

Step 8: Stop

Explanation:

This indicates the start of the algorithm

Step 1: Start

This inputs the radius

Step 2: Input Radius

The following loop is repeated until user input for radius is greater than 0

Step 3: While Radius < = 0

                 Input Radius

This initializes Pi to 3.14

Step 4: Pi = 3.14

This calculates the Perimeter or Circumference

Step 5: Perimeter = 2 * Pi * Radius

This calculates the Area

Step 6: Area = Pi * r^2

This prints the calculated Perimeter ad Area

Step 7: Print Area, Perimeter

This indicates the end of the algorithm

Step 8: Stop

I've added the flowchart as an attachment

Answer:

Explanation:

Torque is expressed according to the formula;

Torque = Force × radius

Given

Force = 39.5N

Radius = 2.75cm

Convert radius to metres

100cm ,= 1m

2.75cm = (2.75/100)

2.75cm = 0.0275m

Find the torque

Torque = 39.5×0.0275

Torque = 1.08625Nm

Hence the torque is 1.08625Nm

Answer:

the potential for causing changes

Explanation:

Answer:

A radar gun is a device for measuring the speed of moving objects. ... The radar gun is a Doppler radar unit that can be static, vehicle-mounted or hand-held. It measures the

Explanation:

Answer:

104.57

Explanation:

V = πr^2h

-3.14, 1.045^2, and 30.48=104.567666431

Answer:

476.35 km

Explanation:

The following data were obtained from the question:

Initial velocity (u) = 11000 km/hr

Final velocity (v) = 0 km/hr (at maximum height)

Acceleration due to gravity (g) = 9.8 m/s²

Maximum height (h) = ?

Next, we shall convert 9.8 m/s² to km/hr². This is illustrated below:

1 m/s² = 12960 km/hr²

Therefore,

9.8 m/s² = 9.8 m/s² × 12960 km/hr² / 1 m/s²

9.8 m/s² = 127008 km/hr²

Thus, 9.8 m/s² is equivalent to 127008 km/h²

Finally, we shall determine the maximum height reached by the projectile.

This is illustrated below:

Initial velocity (u) = 11000 km/hr

Final velocity (v) = 0 km/hr (at maximum height)

Acceleration due to gravity (g) = 127008 km/hr²

Maximum height (h) = ?

v² = u² – 2gh (since the projectile is going against gravity)

0² = 11000² – (2 × 127008 × h)

0 = 121×10⁶ – 254016h

Collect like terms

0 – 121×10⁶ = – 254016h

– 121×10⁶ = – 254016h

Divide both side by – 254016

h = – 121×10⁶ / – 254016

h = 476.35 km

Thus, the maximum height reached by the projectile is 476.35 km

Answer:

v = 0.823 m/s

Explanation:

A man walks south at a speed of 2.00 m/s for 60.0 minutes.

The distance covered in South = 60 × 60 × 2 = 7200 m

He then turns around and walks north a distance 3000 m in 25.0 minutes.

As they moved in opposite direction, net displacement will be : 7200 - 3000 = 4200 m

Average velocity of the man = net displacement/time

[tex]v=\dfrac{4200\ m}{(60+25)\times 60}\\\\=0.823\ m/s[/tex]

So, the average velocity of the man is 0.823 m/s.

Answer:

a

Explanation:

wind energy results from solar radiation

Answer:

♡ madeline here ♡

goodmorning!

it's a, have a great day! ☆

- madeline/madi

✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ

Explanation:

Answer:

B porque tiene energía n..

Answer:

1.  Energy

2. All of the above

3. Store and use

4.  Kinetic

5. mass and velocity

6. Potential

7. mass, height, and gravity

8. Chemical Potential

9. Elastic Potential

10.  (`⌒*)O-(`⌒´Q)

Explanation:

Answer:

5×10^4Pa

Explanation:

Given force of 108 lb is required to pull the lid off the box,

To convert "Ib"to Newton ,we use conversation rate below

1 pounds = 4.4482216282509 newtons

Then 108 lb=x Newton

Cross multiply we have

X= 480.41Newton

The force that is needed to open the lid is F and pressure P.

We know that Pressure= Force/Area

Area is given as 80.0 cm^2, we can convert to m^2 for unit consistency since 1cm^2= 0.001m^2 then

80.0 cm^2 = 80×10^-4m^2

Substitute to the equation of the pressure we have

P= 480.41Newton/(80×10^4m^2)

P=6×10^4 Pa

The pressure in the box will be difference between the initial pressure and final pressure

=( 1.01 ×10^5 Pa)-(6×10^4 Pa)

= 50100Pa

= 5×10^4Pa

Therefore, The pressure in the box was

5×10^4Pa

Answer:

The time constant is [tex]\tau = 17.5 \ s[/tex]    

Explanation:

From the question we are told that

   The spring constant is  [tex]k = 11.5 \ N/m[/tex]

   The mass  of the ball is  [tex]m_b = 490 \ g = 0.49 \ kg[/tex]

   The amplitude of the  oscillation t the beginning is [tex]x = 6.70 cm = 0.067 \ m[/tex]

    The amplitude after time t is  [tex]x_t = 2.20 cm = 0.022 \ m[/tex]

    The number of oscillation is [tex]N = 30[/tex]

Generally the time taken to attain the second amplitude is mathematically represented as

       [tex]t = N * T[/tex]                                            Here  T is the period of oscillation

         [tex]t = N * 2\pi \sqrt{\frac{m}{k} }[/tex]

=>     [tex]t = 30 * 2 * 3.142 * \sqrt{\frac{ 0.490}{11.5} }[/tex]

=>     [tex]t = 38.88 \ s[/tex]

Generally the amplitude at time t is mathematically represented as

         [tex]x(t) = x e^{-\frac{at}{2m} }[/tex]

Here a is the damping  constant so

 at  [tex]t = 38.88 \ s[/tex] ,  [tex]x_t = 2.20 cm = 0.022 \ m[/tex]

So  

     [tex]0.022 = 0.067 e^{-\frac{a * 38.88}{2 * 0.490} }[/tex]

=>  [tex]0.3284 = e^{-\frac{a * 38.88}{2 * 0.490} }[/tex]

taking natural log of both sides

=>  [tex]ln(0.3284 ) = -\frac{a * 38.88}{2 * 0.490} }[/tex]    

=>   [tex]a = 0.028[/tex]

Generally the time constant is mathematically represented as

    [tex]\tau = \frac{m}{a}[/tex]      

=> [tex]\tau = \frac{0.490}{ 0.028}[/tex]    

=> [tex]\tau = 17.5 \ s[/tex]    

Explanation:

Given

Velocity v = 23.0m/s

Distance S = 3.45m

Required

Time it will take the skier to reach the ground;

Using the equation of motion;

S = ut + 1/2gt²

3.45 = 23t + 1/2(9.8)t²

3.45 = 23t + 4.9t²

4.9t²+23t-3.45 = 0

Factorize;

t = -23 ±√23²-4(4.9)(-3.45)/2(4.9)

t = -23 ±√529+67.62/9.8

t = -23±√596.62/9.8

t = -23±24.43/9.8

t = 1.43/9.8

t = 0.146 secs

Hence take the skier 0.146 secs to reach the ground.

b) Horizontal distance covered is the range;

Range = U√2H/g

Range = 23√2(3.45)/9.8

Range = 23√6.9/9.8

Range = 23√0.7041

Range = 23(0.8391)

Range = 19.29m

Hence the horizontal distance travelled in air is 19.29m

(a).The time taken by the skier to reach the ground is 0.145 second.

(b).The skier travel in the air before landing is 19.29 meter.

a. Given that A skier leaves the end of a horizontal ski jump at 23.0 m/s and falls through a vertical distance of 3.45 m before landing.

Using equation of motion.

       [tex]S=ut+\frac{1}{2}gt^{2}[/tex]

Where S is vertical distance , u is initial velocity and g is gravitational acceleration.

Substitute S = 3.45 m, u = 23m/s  and g = 9.8 in above equation.

        [tex]3.45=23t+\frac{1}{2} (9.8)t^{2}\\\\4.9x^{2} +23t-3.45=0\\\\t=0.145,-4.83[/tex]

Since, time can not be negative.

So that,  [tex]t=0.145s[/tex]

b. The horizontal distance travel before landing is known as Range.

           Horizontal distance  ,

                                             [tex]=v*\sqrt{\frac{2S}{g} }[/tex]

Substitute v = 23m/s , S = 3.45 and g = 9.8 meter per second square.

                         [tex]Distance=23*\sqrt{\frac{2*3.45}{9.8} } \\\\Distance=23*\sqrt{0.7041} \\\\Distance=23*0.8391=19.29m[/tex]

Thus, The skier travel in the air before landing is 19.29 meter.

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Answer:

Energy Flows Quick check answers:

1. Ffd.

2. The kinetic energy decreases, and gravitational potential energy increases.

3. The internal energy of the system increases.

4. KEbox= Etotal-mgh

5. Etotal = 1/2m1(v1)^2+1/2m^2(v2)^2+U

The part of the equation that represents the amount of energy converted to thermal energy is [tex]F_f d[/tex].

The given equation for the total energy of a system;

[tex]E_{total} = \frac{1}{2} mv^2 \ +\ mgh\ + \ \ F_fd[/tex]

The definition of the various terms in the energy equation is given as;

The energy lost due to friction is equal to the energy converted to thermal energy.

Thus, the part of the equation that represents the amount of energy converted to thermal energy is [tex]F_f d[/tex].

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Answer:

Explanation:

the image distance can be calculated using below formula of lens

1/v=1/- 1/u

Where

u= Object distance = 15×10^7km

Diameter = 1400000 km

Diameter of lens = 4.6 cm

f= Focal length ( 10 cm)= 1×10^-4

We can substitute to the above formula we have

1/15×10^7km+1/1×10^-4

V=0.001km

Therefore, paper stayed on the focus, hence the sharp image

Answer:

Car A would have a better average speed

Explanation:

added weight to a object that is self propelled will be slower than a identical object with no added weight

Answer:

v = 12 m/min

Explanation:

        [tex]v_{avg} =\frac{x_{f} -x_{o} }{t_{f}-t_{o} } (1)[/tex]

        [tex]v_{avg} = \frac{x_{f} }{t_{f} } (2)[/tex]

       tif = 6 min + 9 min = 15 min

        [tex]x_{f1} = v_{avg1}* t_{1} = 15 m/min * 6 min = 90 m (3)[/tex]

       [tex]x_{f2} = v_{avg2} *t_{2} = 10m/min * 9 min = 90 m (4)[/tex]

       [tex]x_{f} = 90 m + 90 m = 180 m (5)[/tex]

       [tex]v_{avg} =\frac{x_{f} }{t_{f}} =\frac{180m}{15 min} = 12 m/min (6)[/tex]

Answer:

A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.

Explanation:

just took test

A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.

A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.

Balanced force is when the net force applied on the object is zero than said to be balanced.

A 25-N force acts on the left side of the marble at the same time as a 25-N force acts on the right side of the marble.

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Answer:

Brown dwarf or main sequence star

Type of meter would be connected on both sides of a resistor in a circuit is a a voltmeter , which measures potential difference .

A voltmeter is an instrument used for measuring the potential difference , or voltage between two points in an electrical circuit .

A voltmeter is always attached in a series combination and an ammeter (which measures current in a circuit ) always attached in parallel combination with the circuit.

Since , in question it is given that a meter would be connected on both sides of a resistor in a circuit that means it must be a series combination

hence , correct answer is B) a voltmeter , which measures potential difference .

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Answer:

ur answer is d

Explanation:

it has to be coiled to give off magnetic energy