A bicyclist makes a trip that consists of three parts, each in the same direction (due north) along a straight road. During the first part, she rides for 26.8 minutes at an average speed of 7.57 m/s. During the second part, she rides for 42.4 minutes at an average speed of 3.17 m/s. Finally, during the third part, she rides for 9.69 minutes at an average speed of 15.0 m/s. (a) How far has the bicyclist traveled during the entire trip

The parenchyma is widely distributed in plant body such as stem , roots, leaves, flowers and fruits. The parenchyma tissue is found in the soft parts of the plants such as cortex of roots, ground tissue in stems & mesophyll of leaves. It is also distributed in pith , medullary rays & packing tissue in xylem and phloem. They forms the bulk of the plant body they are living and possesses the power of their division. Parenchyma cells have living Protoplasm.

The main function of parenchyma is to store an assimilate food. Parenchyma serves as food storage tissue.

Answer:

magnitude of gravitational force between the Earth and the Sun at B is greater than that at A

Explanation:

Formula of gravitational force:

F = GMm/r^2

(r is the distance between 2 objects)

We see that r(B) < r(A) since at B, the Earth is closer to the Sun than at A

According to the Formula, the smaller r is, the greater F is

So, F(B) > F(A)

Answer:

N/A

Explanation:

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Answer:

there is no picture to help us help you get the answer so please put up a picture.

Explanation:

Answer:

B

Explanation:

Answer:

c. the acceleration is constant and positive

Explanation:

Answer:

The final velocity of the race car is 27.14 m/s

Explanation:

Given;

initial velocity of the race car, u = 18.5 m/s

acceleration of the race car, a = 2.47 m/s²

distance covered by the race car, s = 79.78 m

Apply the following kinematic equation to determine the final velocity of the race car.

v² = u² + 2as

v² = (18.5)² + 2(2.47)(79.78)

v² = 736.363

v = √736.363

v = 27.14 m/s

Therefore, the final velocity of the racecar is 27.14 m/s

Answer:

The impulse of the collision in system A is twice the impulse of the collision in system B. (Last choice)

Explanation:

I just took the quick check and got it wrong for putting what the other person put, which I should've gone with my first choice. The answer above is correct. I really hope this helps!

The correct statement about systems A and B is ; ( D ) The impulse of the collision in system A is twice the impulse of the collision in system B

Momentum is a product of the mass and velocity of particles in motion while impulse is the rate of change of the momentum of particles/objects when a force acts on the object.

The momentum of a particle is proportional to its impulse therefore as momentum in system A changes at twice the rate of change of the momentum in system B the impulse of the collision in system A is also twice the impulse of the collision in system B

Hence we can conclude that The correct statement about systems A and B is The impulse of the collision in system A is twice the impulse of the collision in system B

Learn more : https://brainly.com/question/20182620

Answer:

The energy returns to the weightlifter's muscles, where it is dissipated as heat.

Explanation:

The energy returns to the weightlifter's muscles, where it is dissipated as heat. As long as the weightlifter controls the weight's descent, their muscles are acting as an overdamped shock absorber, as if the weight were sitting on a piston containing very thick fluid, slowly compressing it downward (and slightly heating up the fluid in the process). Since muscles are complicated biological systems and not simple pistons, they require metabolic energy to maintain tension throughout the controlled descent, so the weightlifter feels like they're putting energy into the weight, even though the weight's gravitational potential energy is being converted into heat within the lifter's muscles.

Answer:

x=± 2

=±1.4142

x=0

Explanation: If this does not help then I'm sorry.

STEP

1

:

           1

Simplify   —

           2

Equation at the end of step

1

:

        1

 k -  ((— • k) • x2)  = 0  

        2

STEP

2

:

Equation at the end of step 2

      kx2

 k -  ———  = 0  

       2  

STEP

3

:

Rewriting the whole as an Equivalent Fraction

3.1   Subtracting a fraction from a whole

Rewrite the whole as a fraction using  2  as the denominator :

         k     k • 2

    k =  —  =  —————

         1       2  

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

3.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

k • 2 - (kx2)     2k - kx2

—————————————  =  ————————

      2              2    

STEP

4

:

Pulling out like terms

4.1     Pull out like factors :

  2k - kx2  =   -k • (x2 - 2)  

Trying to factor as a Difference of Squares:

4.2      Factoring:  x2 - 2  

Theory : A difference of two perfect squares,  A2 - B2  can be factored into  (A+B) • (A-B)

Proof :  (A+B) • (A-B) =

        A2 - AB + BA - B2 =

        A2 - AB + AB - B2 =

        A2 - B2

Note :  AB = BA is the commutative property of multiplication.

Note :  - AB + AB equals zero and is therefore eliminated from the expression.

Check : 2 is not a square !!

Ruling : Binomial can not be factored as the difference of two perfect squares.

Equation at the end of step

4

:

 -k • (x2 - 2)

 —————————————  = 0  

       2      

STEP

5

:

When a fraction equals zero

5.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 -k•(x2-2)

 ————————— • 2 = 0 • 2

     2    

Now, on the left hand side, the  2  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  -k  •  (x2-2)  = 0

Theory - Roots of a product :

5.2    A product of several terms equals zero.  

When a product of two or more terms equals zero, then at least one of the terms must be zero.  

We shall now solve each term = 0 separately  

In other words, we are going to solve as many equations as there are terms in the product  

Any solution of term = 0 solves product = 0 as well.

Solving a Single Variable Equation:

5.3      Solve  :    -k = 0  

Multiply both sides of the equation by (-1) :  k = 0

Solving a Single Variable Equation:

5.4      Solve  :    x2-2 = 0  

Add  2  to both sides of the equation :  

                     x2 = 2

When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:  

                     x  =  ± √ 2  

The equation has two real solutions  

These solutions are  x = ± √2 = ± 1.4142  

Three solutions were found :

x = ± √2 = ± 1.4142

k = 0

Terms and topics

Answer:

Change in force = 1.66 × 10⁵ N

Explanation:

Given:

Initial pressure = 837 mmHg

Final pressure = 842 mmHg

Rectangle (10 m ⨯ 25 m)

Find:

Change in force

Computation:

Change in force = (Change in pressure)(Area)(133 pa / 1 mmHg)

Change in force = (842 - 837)(10 m ⨯ 25 m)(133 pa / 1 mmHg)

Change in force = (166,250)

Change in force = 1.66 × 10⁵ N

Answer:

405000 g

Explanation:

1hg(hectogram)=100g

Therefore,

400000g+5000g=405000 g

Answer: sure the truck with 8000 kg mass

Explanation: use the rule: ke=1/2mv^2

Answer:

98 N

Explanation:

Given that

Mass m = 10 kg

Acceleration due to gravity g = 9.8m/s^2

Where the weight of an object is the product of its mass, and the acceleration of gravity. That is,

W = mg

Substitute all the parameters into the formula

W = 10 × 9.8

W = 98 N

Therefore, the weight of the object is 98 Newton

Answer:

use this formula

Average Speed = (Total distance)/(Total Time) =

Answer:

Technician B

Explanation:

The kinetic energy of an object is possessed when it is in motion. It is given by :

[tex]K=\dfrac{1}{2}mv^2[/tex]

m is mass, v is speed

The kinetic energy is directly proportional to its speed. It does not depend on its weight. It would mean that Technician B is correct as he says that "the kinetic energy of a moving vehicle is directly proportional to its speed".

Answer: the answer should be 6,720 decameters.

Answer:

67.2 kilometers =6720 decamaters

ANSWER- I GUESS IT SHOULD BE GRAVITATIONAL FORCE.......

Answer:

GRAVITATIONAL FORCE

Answer:

50.09 km/h

Explanation:

Given that an airplane flying due north at 90 km/h is being blown due west. The planes total velocity is 103 km/ hr north west.

What is velocity of the wind ?

The wind velocity can be calculated by using pythagorean theorem.

From the question,

Resultant Velocity R = 103 km/h

Plane velocity P = 90 km/h

Wind velocity W = ?

W^2 = R^2 - P^2

Substitutes all the parameters into the formula

W^2 = 103^2 - 90^2

W^2 = 10609 - 8100

W^2 = 2509

W = sqrt ( 2509 )

W = 50.09 km/h

Therefore, the velocity of the wind is 50.09 km/h

Answer & Explanation:

If the resultant force is zero, a moving object towards the right will stay at the same speed. If there is no resultant force then a system is said to be in equilibrium.

If the resultant force is not zero, due to a force towards left of a moving object will slow down - depending on the direction of the resultant force:

it will speed up if the resultant force is in the same direction as the object is moving

it will slow down if the resultant force is in the opposite direction

Please note that the object could also change direction, for example if the resultant force acts at an angle.

Answer:

quantitive observation

quantitative observation is a data analysis that is objective. It measures research variables using numerics and statistics. It is a method of observation that views research variables in quantity, which is why the values can be counted in something like age, weight, volume, and scale.

Answer:

This is because the air outside is always cooler than the air inside, so after staying outside your body adapts to the cold air, when you come back inside, the cold air is still in you which makes the room seem warmer.

Answer:

The vertical acceleration is -9.81 m/s^2

Explanation:

When a body is projected, the body experiences an acceleration in the vertical axis that is proportional to the acceleration due to gravity of the earth, which is equal to 9.81 m/s^2. In this case, the acceleration acts to stop the vertical motion of the paper plane, and hence is a deceleration, which explains the negative vertical acceleration.

Answer:

A

Explanation:

Answer:

y = 43.55 + 2.15t

Explanation:

We were told that in 1983, the per capita consumption was 37.1 pounds, and in 1989 it was 50 pounds.

If we assume t = 0 corresponds to year 1980. Then, for 1983 it will be t = 3 and for 1989,it will be t = 9.

Thus, expressing the information as ordered pairs, we have; (3,37. 1) and (9,50).

Let us now find slope of the linear function:

m1 = (y2 - y1)/(t2 - t1)

m1 = (50 - 37.1)/(9 - 3)

m1 = 2.15

So, we can find the linear equation as;

y - 37.1 = 2.15(t - 3)

y = 37.1 + 2.15t - 6.45

y = 43.55 + 2.15t

Answer:

Growth and Development

Explanation:

The frequency of an organ pipe if it is open is given by :

[tex]f=\dfrac{nv}{2l}[/tex]

v is speed of sound in air is 343 m/s at 20°C

For fundamental frequency, n = 1

[tex]f=\dfrac{1\times 343}{2\times 0.26}\\\\f=659.61\ Hz[/tex]

First overtone frequency,

[tex]f_1=2f\\\\f_1=2\times 659.61\\\\f_1=1319.22\ Hz[/tex]

Second overtone frequency,

[tex]f_2=3f\\\\f_2=3\times 659.61\\\\f_2=1978.83\ Hz[/tex]

Third overtone frequency

[tex]f_3=4f\\\\f_3=4\times 659.61\\\\f_3=2638.44\ Hz[/tex]

Hence, this is the required solution.

Answer:

Force.

Explanation:

SImple as that. think of Newtons Laws.

Answer:

c

Explanation:

i got it rigth on the quiz

Answer:

0.00222km/s

Explanation:

[tex]Distance = 0.2km\\Time = 1\:minute \:30\:seconds = 90\:seconds\\\\Average \:speed =?\\\\Average \:speed = \frac{0.2}{90} \\A.V = 0.002222\\A.V =0.00222[/tex]

Answer:

P = 200 W

Explanation:

The expression for the power is

        P = W / t

the job

       W = F d

we substitute

      P = F d / t

      P = F. v

We apply this equation to our case where the velocity is

 v = (5 i + 3j + 6k) m / s

and the force is

 F = (10i + 10j +20 k) N

we substitute in the power equation, remember that the scalar product of the unit vectors is

i.i = j.j = k.k = 1 and the other products are zero

    P = 10 5 + 10 3 + 20 6

    P = 200 W

Answer:

false

Explanation:qualitative is a word or name that describe a quality of the individual while quantitative is a number or something that can be counted or measured from the individual.