What is the picture called that shows ALL the forces acting on an object?

Answer:

The disk covers a rotation of 90º after 3 seconds.

Explanation:

Since the disk rotates at constant angular speed, we can determine the change in angular position (\(\Delta \theta\)), measured in sexagesimal degrees, by the following kinematic formula:

\(\Delta \theta = \omega\cdot \Delta t\) (1)

Where:

\(\omega\) - Angular velocity, measured in sexagesimal degrees per second.

\(\Delta t\) - Time, measured in seconds.

If we know that \(\omega= 30\,\frac{\circ}{s}\) and \(\Delta t = 3\,s\), then the change in angular position is:

\(\Delta \theta = \left(30\,\frac{\circ}{s} \right)\cdot (3\,s)\)

\(\Delta \theta = 90^{\circ}\)

The disk covers a rotation of 90º after 3 seconds.

Answer:so that's C

Explanation:

Wave speed equals frequency*wavelength. So doubling the frequency must halve the wavelength in order for wave speed to remain the same

The change in internal energy, ΔE(AB) is 7.14 kJ.

Since, the ideal gas goes through a cycle of processes, the total change in internal energy will be zero.

ΔE = ΔE(AB) + ΔE(BC) + ΔE(CD) + ΔE(DA) = 0

So,

ΔE(AB) = -ΔE(BC) - ΔE(CD) - ΔE(DA)

​

We know that the process CD s an isothermal process.

So, the change in internal energy, ΔE(CD) = 0

According to the first law of thermodynamics,

ΔE = Q + W

Therefore, the change in internal energy,

ΔE(AB) = -[Q(BC) + W(BC)] - [Q(DA) + W(DA)]

ΔE(AB) = -[Q(BC) + P(B)ΔV(BC)] - [Q(DA) - P(D)ΔV(DA)]

ΔE(AB) = -(100 + 0.31 x3) - (-150 - 1 x -1)

ΔE(AB) = -100 - 0.93 + 150 + 1

ΔE(AB) = 50 + (0.07 x 1.013 x 10⁵)

ΔE(AB) = 50 + 7091

ΔE(AB) = 7.14 kJ

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Answer:

The characteristics that determine how easily two substances change temperature are:

The volume and density of the substances and the amount of time they are in contact do not directly affect how easily they change temperature.

Explanation:

(a) The acceleration of the two block is determined as 0.93 m/s².

(b) The tension in the string is 5.78 N.

The net force on the aluminum block is calculated as follows;

\(T - \mu_a m_a g = m_a a \ --- \ (1)\)

The net force on the copper block is calculated as follows;

\(m_cg sin(30) - T -\mu _cm_c gcos(30) = m_c a --- (2)\)

where;

Solve for T using (1) and (2)

\(a = g(\frac{m_c sin30\ - \ \mu _c m_c cos30 \ - \mu_ a m_a}{ma_a + m_c} )\\\\a = 9.8(\frac{6 sin30\ - \ 0.2 (6) cos30 \ - 0.2 (6)}{2 +6} )\\\\a = 0.93 \ m/s^2\)

From equation (1);

T = μm_ag + m_aa

T = 0.2(2)(9.8) + 2(0.93)

T = 5.78 N

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Answer:

Wait lang po sandali po wait lang

Answer:

No, positive charges cannot be liberated by the photoelectric effect.

Explanation:

Answer:

Magnetism is a physical phenomenon that manifests itself in a force acting between magnets or other magnetized or magnetisable objects, and a force acting on moving electric charges, such as in current-carrying cables. The force action takes place by means of a magnetic field, which is generated by the objects themselves or otherwise. There are natural and artificial magnets. All magnets have two poles called the north pole and the south pole. The north pole of one magnet repels the north pole of another magnet and attracts the south pole of another magnet; the same with south poles.  

The angular velocity to nearest degree per second, gives:

A) 21584°/s

B) 79217°/s

C) 215848°/s

D) 551180°/s

The formula to convert frequency (f) in Hertz (Hz) to angular velocity (ω) in radians per second is:

ω = 2πf

To convert the result to degrees per second, we can multiply by 180/π, which is the conversion factor between radians and degrees.

Using this formula, we get:

A) ω = 2π × 60 = 376.99 rad/s ≈ 21584°/s

B) ω = 2π × 220 = 1382.94 rad/s ≈ 79217°/s

C) ω = 2π × 600 = 3769.91 rad/s ≈ 215848°/s

D) ω = 2π × 1.53 × 10^3 = 9621.89 rad/s ≈ 551180°/s

Rounding these results to the nearest degree per second, we get:

A) 21584°/s

B) 79217°/s

C) 215848°/s

D) 551180°/s

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Answer:

The formula for potential energy depends on the force acting on the two objects.

Answer:

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Answer:

The geocentric model could not fully explain these changes in the appearance of the inferior planets (the planets between the Earth and the Sun). Furthermore, Galileo's observations of Jupiter's moons made it clear that celestial bodies do move about centers other than the Earth.

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The true statement is that the acceleration in the first two seconds is 6 m/s^2.

The term acceleration is defined as the rate of change of velocity with time. The graph as shown is a velocity time graph. The graph shows the changes that occur in the velocity over a given time interval.

Now  we have;

Initial velocity = 0 m/s

Final velocity = 12 m/s

Time taken = 2s

Acceleration = 12 - 0/2

= 6 m/s^2

Thus the true statement is that the acceleration in the first two seconds is 6 m/s^2.

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Explanation:

(a)

The initial kinetic energy is geven by 1/2 m v^2, all of which we are given in the problem.

KE = 1/2 (1500) (32)^2 = 768000 J

(b)

Use the work-kinetic energy theorem. The work-kinetic energy theorem states that the net work done by the forces on an object equals the change in its kinetic energy.

ΔKE = KEf - KEi

Since, the car ends at rest (no velocity), the final kinetic energy is 0.

ΔKE = -KEi = -768000 J

Apply the work kinetic energy theorem.

ΔKE = W = -768000 J

(c)

W = F · d = F d cosα

We are given d, and we have W from part b. In this case, α is 180° since the force must be in the opposite direction of the motion to slow the car down. Rearrange the equation for F.

F = W / (d cosα) = -768000 / (21 cos180°) = 36571 N

(d)

The force causing the car to stop is the frictional force, caused by the car's tires rubbing against the pavement.

Answer:  (B) 1 month

Answer:

greater than 90 degrees

Explanation:

Explanation:

I think its a option pascal's principal

Answer:

c

Explanation:

Just took the quiz

Answer:

False

Explanation:

The Concentration of Acid or Base is the ph of the solution.

Answer:

Brittle, a good conductor, and ductile.

According to the electronic configuration and position of silver in periodic table it can be inferred that it is brittle , good conductor and ductile.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

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If a person walks 1km north, 5 km West, 3km south, and 7km east, then the resultant displacement vector would be 2.82 km toward the south east direction

What is displacement?

When an object moves in connection to a reference frame, such as when a passenger travels to the back of an airliner or a professor walks to the right in relation to a whiteboard, its position changes. This movement in position is described as displacement.

as stated in the issue If a person goes one kilometre north, five kilometres west, three kilometres south, and seven kilometres east,

The resulting displacement vector, as we know, is the shortest feasible distance between the beginning and ending points

In the horizontal direction, the outcome is

7-5 pointing east

2 kilometres to the eas

In the vertical direction, the outcome is

3–1 km to the south

2 kilometres to the south

\($\begin{aligned} \text { Resultant displacement } &=\sqrt{ }\left(2^{2}+2^{2}\right) \\ &=2 \cdot \sqrt{2} \\ &=2.82 \end{aligned}$\)

As a result, the resulting displacement vector is 2.82 kilometres to the southeast.

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Yes, and the colors you see will now be the colors your eye perceives when you see the wavelengths producing the interference patterns.

In physics, the wavelengths is the length over which a periodic wave repeats or its spatial period. It is the separation between neighboring wave points that correspond to the same phase, such as two adjacent crests, troughs, or zero crossings. It is a property of both traveling waves and standing waves as well as other spatial wave patterns. The spatial frequency is the wavelength's reciprocal. The Greek letter lambda (), which represents wavelength, is frequently used. When describing modulated waves, their sinusoidal envelopes, or waves created by the interference of several sinusoids, the term wavelength is also occasionally used.

Wavelength is inversely related to frequency for a sinusoidal wave flowing at a constant speed.

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The reflected rays of light do not produce visible colored interference fringes in a window because the glass structure of a window pane prevent.

In the case of the window pane, it is true that the light is still reflected on the front and rear surface of the glass. the reflecting medium need to have a thickness that the that is comparable to the wavelength of light. windows are simply too thick. Due to the structure of glass, No Interference. In the case of thin film both reflected rays belong to the same waveform. light striking a film is partially reflected and partially refracted at the top surface. the refracted ray is partially reflected at the bottom.

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Answer:

Explanation:

PE = mgh

h = PE/mg

h = 2000/(65.0(9.81))

h = 3.1365168979...

h = 3.14 m

a VERY strong man if he can do that!

First One, Bi (bismuth)

answer: this object is stationary because it is in rest position until or unless the external force act on it we can say this by netwons 1st law

and the stationaty object has relatively zero velocity.

netwons 1st law: Newton's first law states that unless compelled to change its state by the action of an external force, every object will remain at rest or in uniform motion in a straight line.

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 2. here the object has contact with the wall hence there is a  normal force between clock and wall  

the clock is at rest this means that the forcee is balanced and normal force is balanced by gravitational force .the normal force is always perpendicular to the surface of the object.

there is no external force is acting on the clock.

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PHYSICS

Mass = 10 kg

Force = 2 N

Acceleration = ____?

Answers :

\(f \: = m \times a\)

2 = 10 × a

2 / 10 = a

0,2 m/s² = a ✅

Answer:

The product of (wavelength) x (frequency) is always the same number ... the wave's speed.  

So if the wavelength is somehow reduced to  1/4  its original length, the frequency is immediately multiplied by 4 .  That's the only way their product can remain the same.

Explanation:

The particles that are considered nucleons are neutrons and protons. Option B.

Nucleons are particles found in the nucleus of an atom, specifically protons and neutrons.

Protons have a positive charge, while neutrons have no charge, and together they make up the majority of the mass of an atom.

Electrons, on the other hand, are much smaller than protons and neutrons, and they orbit around the nucleus in shells. Since they are not found in the nucleus, electrons are not considered nucleons.

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Answer:

0.62

Explanation:

we know that \(g=\frac{G M}{R^{2}}\)

\(\frac{g_{g}}{g_{J}}=\frac{M_{g}}{M_{J}} \times \frac{R_{j}^{2}}{R_{z}^{2}}=\frac{M}{318 M} \times \frac{(11.2)^{2} R_{g}^{2}}{R_{g}^{2}}\)

\(\frac{g_{g}}{g_{j}}=\frac{125.44}{318}=0.394\)

We know that  \(=\sqrt{\frac{2 h}{g}}\)

here given that each object falls the same distance

\(\therefore t \alpha \sqrt{\frac{1}{g}}\)

\(\therefore \frac{t_{J}}{t_{B}}=\sqrt{\frac{g_{g}}{g_{J}}}=\sqrt{\frac{g}{0.394}}\)

\(\therefore \frac{t_{j}}{t_{g}}=\sqrt{0.394}=0.62\)