Consider an embedded system which uses a battery with a 17.15-Amp-Hour capacity. What is the maximum average current draw (in micro Amps to one decimal place) that your embedded processor can have if you want the battery to last 23 years without being replaced

Answer is given below

Explanation:

The given expression 3 + 2 ∙ 4 = 3 + (2 ∙ 4) is absoulutely correct so it is True.

Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,

Summation = addition of two or more numbers or variable

For example = 2 + 8 + 9

Subtraction = Minus of any two or more numbers with each other called subtraction.

For example = 4 - 8

Division = divide any two numbers or variable called division.

For example 4/8

Multiplication = to multiply any two or more numbers or variables called multiplication.

For example 5 × 7.

Given,

3 + 2 ∙ 4 = 3 + (2 ∙ 4)

We know that in every calculation we cannot separate multiplication and need to solve them first

So,

3 + 8 = 3 + 8

11 = 11

Hence, 3 + 2 ∙ 4 = 3 + (2 ∙ 4)  is absoulutely correct.

To learn more about the arithmetic operators,

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Answer:

Option B

200 cm

Explanation:

From statistical evidence, the average height of an adult is about 200cm. This is like 2m or 6.56 feet.

Despite the fact that there are some exceptions; with some adults reaching heights of about seven feet, and some dwarfs who stand only about 1 m tall,  most adults only grow to about 200cm in height before they start shrinking due to old age.

Answer:

120 Newtons.

Explanation:

Work(Joules) = Force(Newtons) × Distance(Meters)

If we need to find the Force, the equation changes.

To find Force, you have to divide the Work done from the Distance. Have a look at the picture above.

Answer:

(A) The maximum height of the ball is 40.57 m

(B) Time spent by the ball on air is 5.76 s

(C) at 33.23 m the speed will be 12 m/s

Explanation:

Given;

initial velocity of the ball, u = 28.2 m/s

(A) The maximum height

At maximum height, the final velocity, v = 0

v² = u² -2gh

u² = 2gh

[tex]h = \frac{u^2}{2g}\\\\h = \frac{(28.2)^2}{2*9.8}\\\\h = 40.57 \ m[/tex]

(B) Time spent by the ball on air

Time of flight = Time to reach maximum height + time to hit ground.

Time to reach maximum height = time to hit ground.

Time to reach maximum height  is given by;

v = u - gt

u = gt

[tex]t = \frac{u}{g}[/tex]

Time of flight, T = 2t

[tex]T = \frac{2u}{g}\\\\ T = \frac{2*28.2}{9.8}\\\\ T = 5.76 \ s[/tex]

(C) the position of the ball at 12 m/s

As the ball moves upwards, the speed drops, then the height of the ball when the speed drops to 12m/s will be calculated by applying the equation below.

v² = u² - 2gh

12² = 28.2² - 2(9.8)h

12² - 28.2² = - 2(9.8)h

-651.24 = -19.6h

h = 651.24 / 19.6

h = 33.23 m

Thus, at 33.23 m the speed will be 12 m/s

Answer:

Option C. The delivery van has the greatest kinetic energy because its mass is greater than that of the other

vehicles.

Explanation:

Kinetic energy is the energy of an object in motion. Mathematically, it is expressed as:

K.E = ½mv²

Where:

K.E is the kinetic energy.

m is the mass of the object.

v is the velocity of the object.

From the formula above, we can say that:

Kinetic energy is directly proportional to the mass of the object and the square of the velocity of the object. This simply means that objects with higher mass will have a greater kinetic energy than objects will lighter mass even if their velocities are the same.

From the question given above, it is obvious that the delivery van has a greater mass than the rest object.

Therefore, the delivery van will have the greatest kinetic energy because its mass is greater than that of the other

vehicles.

Answer:

c

Explanation:

Answer:

There are eight planets in our Solar System.

Explanation:

Answer:

8

Explanation:

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

Answer:

Frequency of light = 5454.5 GHz

Refractive index = 1.46

speed of light in quartz = 2.05 x 10^8 m/s

Explanation:

The wavelength of the light λ = 550 nm = 550 x 10^-9 m

frequency = ?

Frequency of light f = c/λ

where

c is the speed of light = 3 x 10^8 m/s

substituting, we have

f = (3 x 10^8)/(550 x 10^-9)

frequency f = 5.4545 x 10^14 Hz

==> 5454.5 GHz

The relationship between refractive index is given as

n1 sinθ1 = n2 sinθ2

where

n1 is the refractive index of air = 1

θ1 is the angle of incidence = (90 -70) = 20°

θ2 is the angle of refraction = (90 - 76.46) = 13.54°

n2 is the refractive index of quartz

substituting values, we have

1 x sin 20 = n2 x sin 13.54

0.3420 = n2 x 0.2341

refractive index of quartz n2 = 0.3420/0.2341 = 1.46

From n = c/v

where

n is the refractive index of quartz

c is the speed of light in air = 3 x 10^8 m/s

v is the speed of light in quartz = ?

substituting values, we have

1.46 = (3 x 10^8)/v

v = (3 x 10^8)/1.46 = 2.05 x 10^8 m/s

Answer:

65 miles per hour

Explanation:

Speed= Distance/Time

Following this formula, we just need to insert the values.

The distance is 125 miles and the time is 2 hours

125=2=65

65 miles per hour

The speed of the car was exactly 125 mi per 2 hours.

In a more familiar unit,  125mi/2hr = 62.5 mi/hr.

Answer:

t the apparent weight of the body decreases when it is submerged in water,

 F'_{e} = mg - ρ_liquid g V

Explanation:

When a container is placed on a scale it falls due to the weight of the body and the needle attached to the spring shows the value of the weight that is proportional to the displacement of the spring.

When the body is immersed in a container with water, it exerts a push on the body, so its apparent weight decreases and the compression of the scale is less, therefore it indicates a smaller weight of the body.

Let's write the equilibrium equation for the body is placed on the scale without water

               [tex]F_{e}[/tex] - W = 0

               F_{e} = W

Let us propose the equilibrium equation for this case

            F'_{e} + B - W = 0

where F'_{e} is the elastic force, B the push of the liquid and W the weight of the body

            F'_{e} = W -B

The thrust of the liquid is given by the Archimedean principle which says that it is equal to the weight of the dislodged liquid

            B = ρ g V

             F'_{e} = mg - ρ_liquid g V      (1)

we use the density concept

            ρ_body = m / V

we substitute

             F'_{e}= g V (ρ_body - ρ_agua)          (2)

             F'_{e} < F_{e}

We see  from expression is 1 and 2 that the apparent weight of the body decreases when it is submerged in water,

To know the specific value of the decrease, the weight of the body in the air or its density and volume must be known

Answer:

Given initial height h¹= 1.44

Final height h²=1.68

So factor increase is 1.68/1.44²= 1.17

Percentage increase will be

1.68-1.44/1.44*100%=16.7%

Answer:

0.9 Amps

Explanation:

Ohm's law: Voltage = Current x Resistance

Rearrange equation:

Current =Voltage/Resistance

Voltage=6v

In a series circuit the total resistance is the sum of all the resistors so the total resistance = 0.1+0.15+0.2+0.25+6=6.7 Ohms

6/6.7 = 0.9 (1dp) Amps

Because it is a series circuit, the current is the same throughout the entire circuit, all the resistors have a current of 0.9 Amps.

Hope this helped!

-- If the two resistors are connected in series, then they behave like a single resistor whose resistance is (R₁ + R₂) ohms.

-- For any resistance, the potential difference (volts) across the resistance is   V = (current) x (resistance) .

-- So in THIS circuit,  V = I x (R₁ + R₂) .

Answer:

Answer:

The task of philosophy, for Plato, is to discover through reason (“dialectic”) the nature of the Forms, the only true reality, and their interrelations, culminating in an understanding of the most fundamental Form, the Good or the One. Aristotle rejected Plato’s theory of Forms but not the notion of form itself. For Aristotle, forms do not exist independently of things—every form is the form of some thing. A …

Explanation:

Answer:

A

Explanation:

Because it is a region in atmosphere that allows an particular wavelength of EMWs to pass through and of the options above only visible light is allowed to pass through

Answer:

The  value is   [tex]\alpha =  0.002 Np/m[/tex]

Explanation:

From the question we are told that

  The first amplitude of the wave is  [tex]E_{max}1 =  98.02 \  V/m[/tex]

  The first  depth  is  [tex]D_1 =  10 \  m[/tex]

   The second amplitude is  [tex]E_{max}2 =  81.87 \  (V/m)[/tex]

   The second depth is [tex]D_2 = 100 \ m[/tex]

Generally from the spatial wave equation we have

   [tex]v(x) =  Ae^{-\alpha d}cos(\beta x  + \phi_o)[/tex]

=>       [tex]\frac{v(x)}{v(x)} =\frac{  Ae^{-\alpha d}cos(\beta x  + \phi_o)}{ Ae^{-\alpha d}cos(\beta x  + \phi_o)}[/tex]

So considering the ratio of the equation for the  two depth

[tex]\frac{A}{A_S}  =  \frac{e^{-D_1 \alpha }}{e^{-D_2 \alpha }}[/tex]

=>   [tex]\frac{98.02}{81.87}  =  \frac{e^{-10 \alpha }}{e^{-100 \alpha }}[/tex]

=>   [tex]\alpha  =  \frac{0.18}{90}[/tex]

=>    [tex]\alpha =  0.002 Np/m[/tex]

Answer:

232.641374 mph

Explanation:

A race car has a maximum speed of 0.104km/s

Let X represent the speed in miles per hour

Therefore the speed in miles per hour can be calculated as follows

1 km/s = 2,236.936292 mph

0.104km/s = X

X = 0.104 × 2,236.936292

X = 232.641374

Hence the speed in miles per hour is 232.641374 mph

Speed of the car can be defined by the ratio of distance traveled by time elepsed. The speed of the given car is 233.212 miles/hr.

Speed can be defined by the change in position of an object in a given period of time.

[tex]\bold {Speed = \dfrac {Distance }{Time}}[/tex]

Given here,

The speed of the car is 0.104 km/s

Since 1 km = 0.621

So,  0.104 km = 0.0646

and 1 s = 0.000277

So, the speed of the car in  miles per hour,

[tex]Speed = \dfrac {0.0646 \rm \ miles }{0.000277}\\\\ Speed =233.212 \rm \ miles/hr[/tex]

Therefore, the speed of the given car is 233.212 miles/hr.

Learn more about unit conversion:

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Answer:

false

Explanation:

burning something is a chemical change

Answer:

oxygen silicon aluminun iron

Answer:

Special relativity.

Explanation:

Einstein's general theory of special relativity describes the relationship

between energy and matter, and is major event in the history

of science.

In 1905, Albert Einstein a noble physicist developed a theory that forms part of the basis of modern physics and one of the major event in the history of science, this theory was known as the theory of special relativity.

The theory of special relativity gives the relationship between space and time for any object that is moving at a uniform speed in a straight line, typically at the speed of light.

Simply stated, the theory of special relativity describes how a change in the speed of an object affect or relate with the measurement of space, time and mass. This ultimately implies that, as an object approach the value of light speed, it gains an infinite amount of mass and as such it is unable to travel faster than light.

The theory of special relativity by Albert Einstein gave birth to one of the most famous equation in science;

[tex]E = mc^2[/tex]

The equation illustrates, Energy equals mass multiplied by the square of the speed of light.

Where; E = Energy.

M = Mass.

C = Speed of light.

From the above equation, we can deduce that the mass of an object increases with speed and that mass is equivalent to energy, thus matter (mass) can be interchanged with energy.

Answer:

neither A nor B

Explanation:

There are a lot of reasons, quite handful of them. About why scientists repeat experiments.

They do so sometimes to persistently verify the results they have gotten. Another reason is so as to be able to study and improve them in other ways.

This is just 2 of the very many reasons why scientists repeat experiments. Remember the popular saying, that practice makes perfect? yeah, that's just it

I hope you understand. Thanks

3.56 displacement ( m )

Answer:i

9E13 ELECTRONS

Explanation:

First we find the number of charges in two hrs

Which is - 2x 7200=- 14400NC

So no of electrons is now q/e

-144x10^-7/-1.6*10^-19

= 9*10^13

Answer:

e) electrons are transferred from the rod to the silk.

Explanation:

An initially neutral glass rod contains equal number of electron and proton.

If the rod becomes positively charged  after being rubbed with silk, then the rod must have lost some its electron to the silk since electrons are more mobile than protons, leaving the rod with excess positive charge (protons), and the silk will be negatively charged (excess electron).

Thus, the rod becomes positively charged by transfer of electrons from rod to the silk.

e) electrons are transferred from the rod to the silk.