Throughout the reflection, make sure you have a copy of the Student Guide and your data tables. Use the drop-down
menus to complete the statements.
The independent variables in Part I, the ones intentionally manipulated, are the
The independent variable in Part II, the one that is intentionally manipulated, is the [
The dependent variable for both Parts I and II, the one that you measure the response in, is the

Answer: It's mostly found near Jamestown , New York

Answer:

The cliff is 74.4m.

Explanation:

The reading above clearly state that a ball is dropped straight down with the speed of 9.3m/s and hit the ground exactly at a time of 8.0s after you released it. And it is asking for the distance of the cliff.

In speed formula make distance the subject.

Therefore Distance = speed × time

Distance = 9.3mls × 8.0s = 74.4m

Therefore the cliff is 74.4m.

A [tex]1000[/tex] kg car travelling with velocity [tex]70[/tex]m/s takes [tex]3[/tex] to stop under full braking. And the same car under similar road conditions travelling with velocity [tex]140m/s[/tex] takes [tex]12m[/tex] to stop under full braking.

How can we find Distance at velocity [tex]140m/s[/tex] ?

In case of [tex]70m/s[/tex] car stop under full braking after [tex]3m[/tex].

So we can find the acceleration by third equation of motion

[tex]v^2=u^2+2as[/tex]

Here [tex]v[/tex] is final velocity which is zero.

[tex]u[/tex] is initial velocity which is [tex]70m/s[/tex]

[tex]s[/tex] is displacement

So substitute the values in equation of motion

[tex]0=70^2+2*a*3\\-4900/6=a\\-816.6m/s^2=a[/tex]

In case of initial velocity [tex]140m/s[/tex] acceleration is same because same car and same road condition so acceleration is [tex]-816.6m/s^2[/tex]

We can find the distance by using the equation of motion

[tex]v^2=u^2+2as\\0=140^2+2*(-816.6)*s\\-19600/-1633.2=s\\12m=s[/tex]

Distance is [tex]12m[/tex]

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【Answer】Therefore, the mass in said substance is 375 kilograms.

                               [tex]\red{ {\hspace{50 pt}\above 1.2pt}\boldsymbol{\mathsf{Procedure}}{\hspace{50pt}\above 1.2pt}}[/tex]

This is an exercise on fluids and their fundamental characteristics.

We start to solve, obtaining the data:

                                   Conversion from liters to m³

                                      [tex]\boldsymbol{1500\not{l}*\dfrac{1 \ m^{3} }{1000\not{l} }=1.5 \ m^{3} }[/tex]

To calculate mass: multiply density by volume.

                                       [tex]\boldsymbol{m=d*v \ \ \to \ \ \ Formula}[/tex]

We clear our data in the formula:

                                       [tex]\boldsymbol{m=250\dfrac{kg}{\not{m^{3}}}*1.5\not{m^{3}} }[/tex]

                                        [tex]\boldsymbol{m=375 \ kg}[/tex]

Answer:

[tex] \tt \: mass \: = \frac{weight}{acceleration \: due \: to \: gravity} [/tex]

[tex] \longrightarrow \tt \: \frac{150}{10} [/tex]

[tex] \longrightarrow \boxed{ \tt{15 \: kg}}[/tex]

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Answer: A microwave oven operates at 2.4GHz with an intensity inside the oven of 2500 W/m^2. Then, the amplitudes of the oscillating electric and magnetic fields are, [tex]B_0=4.57*10^{-6} T and E_0=1.37*10^{3} V/m[/tex]

Explanation: To find the correct answer, we have to know more about the EM Waves.

                          [tex]E_0=cB_0[/tex]

                        [tex]I=\frac{1}{2u_0} cB_0^{2}[/tex]

                          [tex]B_0=\sqrt{\frac{2u_0I}{c} }=\sqrt{\frac{2*4*3.14*10^{-7}*2500 }{3*10^{8} } } =4.57*10^{-6} T[/tex]

                              [tex]E_0=cB_0=3*10^{8} *4.57*10^{-6} =1371 V/m[/tex]

Thus, from the above calculations, we get the amplitudes of the oscillating electric and magnetic fields are, [tex]B_0=4.57*10^{-6} T and E_0=1.37*10^{3} V/m[/tex]

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Answer:

The velocity after 12s is 50.4m/s.

Explanation:

In acceleration formula make velocity the subject.

acceleration(a) = velocity(v)÷time(t)

V = 4.2m/s²×12s

V = 50.4m/s

Therefore the velocity after 12s is 50.4m/s.

The time in which the animal B overtake animal A according to the motion map is at 2 seconds.

This is referred to as one-dimensional plots built off of a position line and depicts velocity and acceleration.

The time in which Animal B is ahead of animal A is at 2 seconds which therefore makes it the most appropriate choice.

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Answer:

the gravitational force

Answer:

The resistance of the each bulb is 1.75 ohm.

Explanation:

The Power P supplied by the battery is given by the formula,

P=VI

where V is the voltage and I is the current.

Then the total current through given parallel circuit is I=P/V

Given P=48 W and V=6 V the value of I is

I=48 W/6 V

I= 8 A

Since both bulbs have same resistance and are connected in parallel so the current through each circuit will be half of the total current. Hence the current through each circuit I₀ is 4 A.

The Resistance R is calculated using formula R=V/I₀.

So the resistance is

R=6 V/4 A

R=1.75 ohm

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Answer:

The resistance of the bulb is 1.5 ohm.

Explanation:

The power P delivered to the whole circuit is given by the formula,

P=VI

Given  P= 48 W and V= 6V, the current in the circuit is

I=P/V

I=48/6= 8 A.

Since the bulbs are identical and are in parallel, therefore the current through each parallel circuit is half of the total current. Therefore current I1 through each bulb is 4 A.

The resistance is given by the formula,

R=V/I1

Hence R=6/4 = 1.5 ohm

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In equation form, Or KE+PE=constant KEi+PEi=KEf+PEf where i and f denote initial and final values. This is known as the conservation of mechanical energy.

Κi + Ûg,i = kf + U,g,f

A closed system is a system where exists energy interactions with surroundings, but not mass interactions.

If we neglect any energy interactions from boundary work, heat, electricity, magnetism, and nuclear phenomena and assume that process occurs at a steady state and all effects from non-conservative forces can be neglected, then the equation of energy conservation is reduced to this form:

K + Ug = 0 (1)

Where:

K -Change in kinetic energy of the system, measured in joules.

Ug - Change in gravitational potential energy of the system, measured in joules.

If we know that K = Ki - Kf and Ug = Ug,i - Ug,f, then we get the following equation:

Ki + Ug,i = Kf +  Ug,f, (2)

Where i and f stand for initial and final states of each energy component.

Hence, the right answer is Ki + Ug,i = Kf +  Ug,f,.

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Answer:

A KEi + PEi = KEf + PEf

Explanation:

a. Work done = 2. 0648 Joules

b. Electrical potential, V = 4. 03 × 10^10 volts

a. Work done = force × distance

Force = density × acceleration due to gravity

Force = 5. 80 × 10

Force = 58 Newton

We have that distance = 3. 56cm = 0. 0356 m

Work done = 58 × 0. 0356

Work done = 2. 0648 Joules

b. The formula for electric potential is given thus,

Electric potential, V = [tex]k\frac{q}{r}[/tex]

r = 0. 0356m

k = Coulomb's constant = [tex]8.98*10^9[/tex]kg⋅m3⋅s−4⋅A−2.

q= 1.60x10^-¹C

substitute into the formula

Electric potential, V = [tex]8. 98[/tex] × [tex]10^9[/tex] × [tex]\frac{1. 6 * 10^-^-1}{0. 0356}[/tex]

Electric potential, V = [tex]8. 98 * 10^9[/tex] × [tex]4. 494[/tex]

Electric potential, V = [tex]4. 03 * 10^1^0[/tex] volts

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4.719kJ is the work done by the gravitational force.

Given,

Mass of Spiderman, m = 80 kg

Acceleration due to gravity, g = 9.8[tex]m/s^{2}[/tex]

Formula used

F= mg

So, The force on Spiderman is= 80 × 9.8 = 784N

As Spiderman is dangling on the free end of a long rope, the other end of which is fixed to a tree limb above.

That's why only his vertical movement makes a difference in how much work gravity does.

So, we only consider the y coordinates here

As the rope is 12m long ,

y coordinate below the tree limb is –12m. (negative sign because the value is present below the origin.)

As it is given that the rope makes a 60.08° angle with the vertical.

So his final y coordinate is (–12.0m)cos60.08°

= -12×0.498 = -5.98m

Change in elevation (ΔS)=  –5.98m–(–12.0m)= 6.02m.

The work done by the gravity on Spiderman is:

W=FΔscosθ….. (1)

where, F = Force of gravity on Spiderman

ΔS = Change in the elevation

θ = angle between force and the displacement

Putting the values in equation (1)

W = 784 × 6.02 ×cos 180°

   = 784 × 6.02 × -1 = 4719.68 J = 4.719kJ

Hence, the work was done by the gravitational force on Spiderman in this maneuver is 4.719 kJ.

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If the current that is circuit is tripled,  the power is increased by a factor of 9. Option D

The term power refers to the rate of doing work. Now if we have to obtain the work done by the use of the formula; P = I^2R

Now if the current that is circuit is tripled, the power is now obtained by;

P = (3I)^2R = 9I^2R hence the power is increased by a factor of 9.

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The circuit change when the wire is added will see a short circuit occur and makes bulbs 1 and 2 turn off but keeps bulbs 3 and 4 lit. Option D. This is further explained below.

Generally, Electronic circuits consist of a series of interconnected parts that form a closed loop through which electricity may flow.

In conclusion, If two wires are linked together, a short circuit will develop, cutting power to bulbs 1 and 2. But there is no impact on bulbs 3 and 4. There is no problem with bulbs 3 and 4.

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Ultraviolet rays are Electromagnetic waves that have higher frequencies than visible light, so they carry more energy.

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Answer:

Explanation:

Answer:

The efficiency of the light bulb is 30%.

Explanation:

Efficiency = output/input × 100%

Data

Energy input = 100J

Energy output = 30J

Efficiency = ?

Efficiency = Energy output/Energy input × 100%

Efficiency = 30J/100J × 100%

Efficiency = 0.3 × 100%

Efficiency = 30%

Therefore the efficiency of the light bulb is 30%.

Answer:

9.8 m/s

Explanation:

If these objects are in free fall, meaning that their downward movement is only due to the force of gravity, then acceleration due to gravity is about 9.8 metres per second per second.

Answer:

F = K Q1 Q2 / R^2       force between 2 charged partices

F2 / F1 = (R1 / R2)^2 = (1 / 2.69)^2 = .139

F2 = .139 F1

The horizontal force that the seat must be pulled so that the ropes form an angle of 35o with respect to the vertical is 345.2 N.

The horizontal force that the seat must be pulled so that the ropes form an angle of 35o with respect to the vertical is calculated as;

F = Wcosθ

where;

F = (43 x 9.8) x cos(35)

F = 345.2 N

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Answer:

The spring constant is 647.05 N/m.

Explanation:

The weight of the mass is W=mg

                                            W=66*10

                                            W=660

The spring force is given by the formula F=kx

where k is the spring force constant.

The spring force is equal to the weight of the mass. Therefore equate W and F.

kx= 660

k=660/x

Difference in length x=2.1-0.08= 1.02 m

k=660/1.02

k=647.05 N/m

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Given the electronegativity of O is 3.5 and H is 2.1,  the bond between the two atoms will be classified as a polar covalent bond.

According to the difference in electronegativity (ΔEN).

Oxygen has an electronegativity of 3.5 and hydrogen of 2.1. The difference in electronegativity is:

ΔEN = EN(O) - EN(H) = 3.5 - 2.1 = 1.4

Given the electronegativity of O is 3.5 and H is 2.1,  the bond between the two atoms will be classified as a polar covalent bond.

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The valid prediction is  f(x) ≥ 0 over the interval [–1, 1]

The question seems to be incomplete the complete question is given in the image!!!!

A function from a set X to a set Y is an assignment of an element of Y to each element of X. The set X is called the domain of the function and the set Y is called the codomain of the function.

The given values for x = 3 , f(x) = -15 Here f (x) < 0

When x =0, f(x) = 5 Here f(x) > 0

So for f(x) ≤ 0 over the interval  (–[infinity], [infinity]) is the wrong option

When x = 2  f(x)=-5 here f(x) < 0

So , f(x) > 0 over the interval (–1, [infinity]) is also a wrong option

When x = 1 f(x)=0 here f(x) > 0

So , f(x) < 0 over the interval (0, 2) is also a wrong option

When x = -1 f(x) = 0

When x = 0 f(x) = 5

When x = 1 f(x) =0

So ,   f(x) ≥ 0 over the interval [–1, 1] is the valid prediction

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a.600 cm³

b. 2.5 g/cm³

c.  2.0775 kg

In Physics, this Archimedes' Eureka moment is called the Archimedes Principle, which states that when a body is immersed in a liquid, it experiences an upward buoyant force, which is equal to the weight of the liquid displaced by the body.

According to the question

Mass of Eureka is 60g

Cross sectional area  is 60 square centimeters

Mass of steel piece is 20g

Density = 8g /cubic centimeter

a)The total mass of the can before the metal was lowered we need to add the mass of the eureka can and the mass of the water in the can.

To find the mass of the water but we can easily find if we know the volume of the can.

In order to calculate the volume we would have to multiply the area of the cross section by the height.

Here,

60cm² x 10cm = 600 cm³

To find the mass that water has in this case we have to multiply the water's density by the volume,

so we get....

[tex]\frac{1g}{cm^3}[/tex] x 1000 = 1000g or 1kg

Now can calculate the total mass of the can before the metal was lowered, by adding the mass of the water to the mass of the can.

So we get....

1000g + 60g = 1060g or 1.06kg

b)The volume of the water that over flowed will be equal to the volume of the metal piece since, when we add the metal piece, the metal piece will force out the same volume of water as itself, to understand this more deeply you can read the about "Archimedes principle".

Knowing this we just have to calculate the volume of the metal piece an that will be the answer.

So this time in order to find volume we will have to divide the total mass of the metal piece by its density.

So we get

20g ÷ [tex]\frac{8}{cm^3}[/tex] = 2.5 g/cm³

c)Now to find out the total mass of the can after the metal piece was lowered we would have to add the mass of the can itself, mass of the water inside the can, and the mass of the metal piece.

We know the mass of the can, and the metal piece but we don't know the mass of the water because when we lowered the metal piece some of the water overflowed, and as a result the mass of the water changed. So now we just have to find the mass of the water in the can keeping in mind the fact that 2.5 overflowed.

So now we the same process as in number a) just with a few adjustments.

[tex]\frac{1g}{cm^3}[/tex] x (1000 - 2.5) = 997.5g

So now that we know the mass of the water in the can after we added the metal piece we can add all the three masses together (the mass of the can.

The mass of the water, and the mass of the metal piece.

Hence,

1060g + 997.5g + 20g = 2077.5 g or  2.0775 kg

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The main force(s) acting on the puck after receiving the kick is a downward force of gravity, an upward force exerted by the surface, and a horizontal force in the direction of motion.

Friction can be defined as that resistance that one surface or object encounters when moving over another.

So therefore, the main force(s) acting on the puck after receiving the kick is a downward force of gravity, an upward force exerted by the surface, and a horizontal force in the direction of motion

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Answer:

time taken= 8s

deceleration = -0.625ms^-2

Explanation:

s = 1/2(u+v)t (linear motion formula)

20 = 1/2 ( 5+0 ) t

t=time taken, find t

t= 8s

a= (v-u) / t

a= (0-5) / 8s

= -0.625 ms^-2

3,89,988 cm/min is the linear velocity

Given,

Diameter of CD = 12 cm

So, Radius of CD = 6 cm

CD is spinning at 10350 rev/min

Firstly , convert rev/min into rad/min

1 rev = 2π radians

10350 rev/min = 10350 × 2π

                        = 64998 rad/min

Formula used,

[tex]v=rw[/tex] where,

[tex]v[/tex] is the Linear velocity

[tex]r[/tex] is the radius

[tex]w[/tex] is the angular velocity

[tex]v[/tex] = 6 cm × 64998rad/min

  = 3,89,988 cm/min

Thus, linear velocity for any edge point of a 12-cm-diameter CD (compact disc) spinning at 10,350 rev/min is 389988 cm/min.

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