Please help me out with my physics

Answer:

19.1 m, 52.0°

Explanation:

Given:

v₀ₓ = 0 m/s

v₀ᵧ = 2.88 m/s

vᵧ = 0 m/s

aₓ = 0.350 m/s² cos(-52.0°) ≈ 0.215 m/s²

aᵧ = 0.350 m/s² sin(-52.0°) ≈ -0.276 m/s²

Find: Δx and Δy

First, find time.

vᵧ = aᵧt + v₀ᵧ

0 m/s = (-0.276 m/s²) t + 2.88 m/s

t = 10.4 s

Now find the displacement components Δx and Δy.

Δx = v₀ₓ t + ½ aₓ t²

Δx = (0 m/s) (10.4 s) + ½ (0.215 m/s²) (10.4 s)²

Δx = 11.7 m

Δy = v₀ᵧ t + ½ aᵧ t²

Δy = (2.88 m/s) (10.4 s) + ½ (-0.276 m/s²) (10.4 s)²

Δy = 15.0 m

The magnitude of the displacement is:

d² = Δx² + Δy²

d² = (11.7 m)² + (15.0 m)²

d = 19.1 m

The direction of the displacement is:

θ = atan(Δy / Δx)

θ = atan(15.0 m / 11.7 m)

θ = 52.0°

Answer:

Acceleration decreases.

Explanation:

Hope this helps you.

Answer:

[tex]average power = 416.67 \: W

[/tex]

Explanation:

[tex]are \: you \: sure \: this \: is \: a \: man \: or \: robot?......haha. \\ the \: average \: power \: is \: given \: by : \\ p_{(a.v)} = \frac{w}{t} \: but \: work \: or \: energy \: expanded \: is \: given \: by : \\ w = \: fs = mgs \: \: therfore, \: p_{(a.v)} = \frac{mgs}{t} \\ note \: the \: followng : \\ p_{(a.v)} = average \: power, \\ w = work \: done \: or \: energy \: expanded, \\ f = force \: due \: to \: gravity \: = weight = mg, \\ s = distance = height = 2m \times 25 \: lifts, \: m = mass = 50kg, \\ \: g \: = \: acceleration \: due \: to \: gavity = 10 {m(s)}^{ - 2} and \: t = time = 60s.

\\ so \: what \: now, ok \: lets \: find \: p_{(a.v)} . \\ p_{(a.v)} = \frac{mgs}{t}= \frac{50 \times 10 \times 50}{60} = 416.66666667 \: watts.[/tex]

Answer:neutron

Explanation:

Because it is similar to the motor neurons

Answer:

Proton

Explanation:

Proton therapy, also called proton beam therapy, is a type of radiation therapy. It uses protons rather than x-rays to treat cancer. A proton is a positively charged particle. At high energy, protons can destroy cancer cells.

In a gym the students raced with each other and teacher is recording everyone's speed than the second graph is representing correctly.

A graph is a visual depiction of statistical data or a logical relationship between variables. Graphs serve a predictive purpose because they have the virtue of displaying broad trends in the mathematical behavior of data. However, as just approximations, they may be incorrect and occasionally deceptive.

Most graphs have two axes, with the axis denoting a set of independent variables and the vertical axis denoting a set of dependent variables. The most typical graph is indeed a broken-line chart, where the regression coefficient is typically a factor of duration.

In the second graph the speed of every student is represented accurately, therefore the second graph is correct.

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Answer:

Equitable education in a healthy democracy includes science and engineering learning for every student. Great science and engineering education engage student so that they develop the knowledge and intellectual dispositions to make sense of the natural and designed worlds.

Explanation:

Answer:

variables on the horizontal and vertical axis (slope, outliers, +/- correlation, etc)

Explanation:

Answer: tug vi

Explanation:

Because

Answer:

C

Explanation:

Answer:

A) 12.08 m/s

B) 19.39 m/s

Explanation:

A) Down the hill, we will apply Newton’s second law of motion in the downward direction to get:

mg(sinθ) – F_k = ma

Where; F_k is frictional force due to kinetic friction given by the formula;

F_k = (μ_k) × F_n

F_n is normal force given by mgcosθ

Thus;

F_k = μ_k(mg cosθ)

We now have;

mg(sinθ) – μ_k(mg cosθ) = ma

Dividing through by m to get;

g(sinθ) – μ_k(g cosθ) = a

a = 9.8(sin 12.03) - 0.6(9.8 × cos 12.03)

a = -3.71 m/s²

We are told that distance d = 24.0 m and v_o = 18 m/s

Using newton's 3rd equation of motion, we have;

v = √(v_o² + 2ad)

v = √(18² + (2 × -3.71 × 24))

v = 12.08 m/s

B) Now, μ_k = 0.10

Thus;

a = 9.8(sin 12.03) - 0.1(9.8 × cos 12.03)

a = 1.08 m/s²

Using newton's 3rd equation of motion, we have;

v = √(v_o + 2ad)

v = √(18² + (2 × 1.08 × 24))

v = 19.39 m/s

Answer:

During a phase change, the temperature will remain constant. Obviously all the heat is used in phase transformation. So the correct answer should be D. Forgive me if I'm wrong but I hope this helps!

The temperature of a substance remains constant while it is changing state. Thus, the correct option is D.

Temperature has a direct effect on whether a substance exists in states as a solid, liquid, or gaseous substance. Substances can change their phase often because of a temperature change of the substance. At very low temperature conditions, most of the substances are solid, as the temperature of the substance keeps on increasing, then they become liquid and at very higher temperatures still, they become gaseous substances.

The temperature of a substance remains constant while it is changing its state.

Therefore, the correct option is D.

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Answer:

51m/s^1

Explanation:

v=u+at

v=(6)+(3)(15)

v=51m/s^1

Answer:

In space noone can hear you scream.....

Explanation:

There is no sound in space. Sound, like light or heat, is a wave. However, one major distinction is that, unlike light or heat (radiation), sound needs a medium to travel. Sounds require the presence of molecules or particles to travel from one region to another.

Answer: 5.5

Explanation: its simply different from the others

Answer:If the masses are different, the lighter ice skater will accelerate faster than the ice skater with more mass.

Explanation:

The lighter skater will accelerate more quickly than the heavier skater if there are mass discrepancies.

According to Newton's third law, the action and reaction forces in any force interaction must be equal and moving in the opposite directions. These pressures, nevertheless, affect a variety of items. In this case, each skater will experience the same amount of force, and if any other horizontal forces, such as friction, operating on each skater in the opposite direction from the pushing force are less than the pushing force, each will accelerate in that direction. The two skater system's center of mass will remain where it is if there is little to no friction to prevent the skaters from moving.

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Answer:

No; the graph fails the vertical line test.

The vertical line test is a tool used to determine if we have a function. If we can draw a single straight vertical line through more than one point on the red curve, then the graph is said to have failed the vertical line test. Consequently, this leads to the relation not being a function.

For this circle graph, we can draw a vertical line through more than one point, which is why we don't have a function here.

Put another way, there are inputs (x) that produce more than one output (y), so that's why we don't have a function.

-BBBM

Answer:

maybe. inv me to slides and I'll try.

Explanation:

Answer:

60 Amperes

Explanation:

current is the main factor, so current is measured in Amperes

Answer:

D

Explanation:

The table is NOT in motion, so it will remain still. Newton's second law states that for every action, there's an equal and opposite reaction. Therefore, the table must push back the opposite direction(up) with the same force(15N)

Distance travelled will be = 63 m

These are the equations that describe the behavior of a physical system in terms of its motion as a function of time .

Given : u = 24 m/s

           v= 18 m/s

           t = 3sec

using equation of motion : v = u + at

                         18 = 24 + a*3

                         -6 = 3a

                          a = -2 m/s^2

using equation of motion : s =  u t + 1/2 a (t^2)

                           s = 24 * 3 + 1/2 * (-2)(9)

                          s = 63 m

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Answer:

Soln:

d=30m

t=3s

now:

v=d/t

=30/3

=10

Answer: 39.2 m/s

Explanation:

You can use the kinematic equation:

[tex]v_f^2=v_i^2+2a*d[/tex]

We know the final velocity because it says it came to a stop. So now all we gotta do is plug in.

[tex]0^2=v_i^2+2(-10)(76.7)\\v_i^2=1,534\\v_i=\sqrt{1534} \\=39.166 m/s[/tex]

Answer:

0

Explanation:

she runs 2 whole laps around a 400 meter track, but she is always ending up back where she started, therefor there is no displacement.

Answer:

15.34 i think

Explanation:

Answer:

Gold

Silver

Mixture

Explanation:

Density

The density of an object of mass m and volume V is given by:

[tex]\displaystyle d=\frac{m}{V}[/tex]

We are given the following densities:

Gold: 19.3 gr/cm3

Silver: 10.5 gr/cm3

With the data provided in the table, we can confirm which of the three columns corresponds to gold, silver, or a mix of both.

Calculating the first density: m1=1,930 gr, V1=100 cm3

[tex]\displaystyle d1=\frac{m1}{V1}[/tex]

[tex]\displaystyle d1=\frac{1,930}{100}[/tex]

[tex]d1=19.3\ gr/cm^3[/tex]

This crown is made of gold

Calculating the second density: m2=1,930 gr, V2=184 cm3

[tex]\displaystyle d2=\frac{m2}{V2}[/tex]

[tex]\displaystyle d2=\frac{1,930}{184}[/tex]

[tex]d2\approx 10.5\ gr/cm3[/tex]

This crown is made of silver

Calculating the last density: m3=1,930 gr, V3=150 cm3

[tex]\displaystyle d3=\frac{m3}{V3}[/tex]

[tex]\displaystyle d3=\frac{1,930}{150}[/tex]

[tex]d3\approx 12.9 gr/cm^3[/tex]

Since the value of the density is between gold and silver, this crown is a mixture.

Answer:

A fertilizer or fertiliser is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply one or more plant nutrients essential to the growth of plants. Many sources of fertilizer exist, both natural and industrially produced.

Explanation:

Answer:

4x10=30

Explanation:

You can easily know it's multiplication when you see the sign. It gives you the number but you have to plug it in. So once you plug in the numbers then you should get either 4x10 or 10x4 which means both is equal to 40

Answer:

Hope this helps!~ (Sorry if you get it wrong or I got it wrong-)

Explanation:

The standard SI unit for magnetic field is the Tesla, which can be seen from the magnetic part of the Lorentz force law Fmagnetic = qvB to be composed of (Newton x second)/(Coulomb x meter). A smaller magnetic field unit is the Gauss (1 Tesla = 10,000 Gauss).

~The Confuzzeled homan