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Vanyuwa [196]
3 years ago
9

The diagram shows the path of a pendulum bob that has been released.

Physics
1 answer:
Ivenika [448]3 years ago
6 0
The right answer for the question that is being asked and shown above is that: "B. It decreases as it travels from its maximum amplitude to its resting point." the statement that describes the kinetic energy of the pendulum bob is that <span>It decreases as it travels from its maximum amplitude to its resting point.</span>
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A force of 200 N is applied on small piston of a pascal press. What would be the
VladimirAG [237]

Answer:

The force applied on the big piston is 1306.67 N

Explanation:

Given;

force applied on small piston, F₁ = 200 N

diameter of the small piston, d₁ = 4.37 cm

radius of the small piston, r₁ = d₁/2 = 2.185 cm

Area of the small piston, A₁ = πr₁² = π(2.185 cm)² = 15 cm²

Area of the big piston, A₂ = 98 cm²

The pressure of the piston is given by;

P = \frac{F}{A} \\\\\frac{F_1}{A_1} = \frac{F_2}{A_2}\\\\ F_2 = \frac{F_1A_2}{A_1}

Where;

F₂ is the force on big piston

F_2 = \frac{200*98}{15} \\\\F_2 = 1306.67 \ N

Therefore, the force applied on the big piston is 1306.67 N

3 0
3 years ago
30 points for most Brainiest!!!
bearhunter [10]

Answer:

Mechanical waves are defined by which of the following?

C. All of the above

Since, mechanical waves are created when an energy source vibrates, and they carry energy from one place to another through a medium, this is the right option.

Mechanical waves need an energy source to produce them?

True because a mechanical wave needs an initial energy input.

A wave has a wavelength of 100 mm and a frequency of 6 Hz. What is its speed?

600 mm/s

Wave speed = wavelength X frequency

Wave speed = 100 X 6

Wave speed = 600 mm/s

Amplitude of a wave is?

B. How high the wave is from resting point

By definition of amplitude.

8 0
3 years ago
Other than temperature, which property also has an effect on the rates of chemical reactions?
PSYCHO15rus [73]

Other than temperature, the property that also has an effect on the rates of chemical reactions is the concentration of the reactants. The correct answer is B

The rate of chemical reaction means how chemical react with respect to time or as a function of time. The rate of chemical reaction tells us the speed or how fast chemicals react.

There are many factors that can affect the rate of chemical reaction. Temperature is one of them. Increase in temperature will increase the rate at which chemical react.

The color of reactants, solubility of reactants and volume of reactants have nothing to do with the rate of chemical reaction.

Other than temperature, the property that also has an effect on the rates of chemical reactions is the concentration of the reactants.

Other factors affecting the rate of chemical reaction are:

  • the physical state of the reactants
  • surface area
  • temperature
  • and the presence of a catalyst

Therefore, the correct answer is option B

Learn more about chemical reaction here: brainly.com/question/11231920?source=archive

8 0
3 years ago
What makes up the biosphere?
algol [13]
Composed of the parts of the earth where life exists. It includes the dark enviroment of the oceans deep trenches,the rainforests and high mountaintops. Bacteria,protozoa and up to 30 million species of animals, plants and fungi are included in the biosphere.
6 0
4 years ago
From the window of a building, a ball is tossed from a height y0 above the ground with an initial velocity of 8.10 m/s and angle
GarryVolchara [31]

Answer:

Part a)

y = 88.5 m

Part b)

v_x = 7.7 m/s

v_y = 2.5 m/s

Part c)

equation of position in x direction is given as

x = v_x t

equation of position in y direction is given as

y = v_y t + \frac{1}{2}gt^2

Part d)

x = 30.8 m

Part e)

H = 88.5 m

Part f)

t = 1.2 s

Explanation:

As we know that ball is projected with speed

v = 8.10 m/s at an angle 18 degree below the horizontal

so we will have

v_x = 8.10 cos18

v_x = 7.7 m/s

v_y = 8.10 sin18

v_y = 2.5 m/s

Part a)

Since it took t =4 s to reach the ground

so its initial y coordinate is given as

y = v_y t + \frac{1}{2}a_y t^2

y = 2.5(4) + \frac{1}{2}(9.81)(4^2)

y = 88.5 m

Part b)

components of the velocity is given as

v_x = 8.10 cos18

v_x = 7.7 m/s

v_y = 8.10 sin18

v_y = 2.5 m/s

Part c)

equation of position in x direction is given as

x = v_x t

equation of position in y direction is given as

y = v_y t + \frac{1}{2}gt^2

Part d)

distance where it will strike the floor is given as

x = v_x t

x = 7.7 \times 4

x = 30.8 m

Part e)

Height from which it is thrown is same as initial y coordinate of the ball

so it is given as

H = 88.5 m

Part f)

time taken by ball to reach 10 m below is given as

y = v_y t + \frac{1}{2}gt^2

10 = 2.5t + \frac{1}{2}(9.81) t^2

t = 1.2 s

7 0
3 years ago
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