an inquisitive physics student and mountain climber climbs a 50-m cliff that overhangs a calm pool of water. he throws two stones vertically downward 1 s apart and observes that they cause a single splash. the first stone has an initial velocity of 2 m/s. (a) at what time after release of the first stone will the two stones

Answer:

The two of the following measurements, when taken together, would allow engineers to find the total mechanical energy dissipated during the skid

B. The contact area of each tire with the track.

C. The co-efficent of static friction between the tires and the track.

D. The co-efficent of static friction between the tires and the track.

Explanation:

The gauge pressure of the liquid is 92330 atm.

Bernoulli's principle states that, 'total energy of a given mass of liquid flowing through a pipe line under streamline flow is constant.

Here,

The rate of flow of fluid, Q = AV

i.e,  

     A₁v₁ = A₂v₂

Substituting the values in the equation,

  \(\pi\)(d₁)² x 4.6 = \(\pi\)(d₂)²x v₂

        v₂ =  4.6x (d₁/d₂)²²

        v₂ = 4.6x (3.3/2)²

        v₂ = 4.6x 2.72

        v₂ = 12.51 m/s

According to Bernoulli's theorem,

P₁ + 1/2ρv₁² = P₂ + 1/2ρv₂²

1.6x 10⁵ + 0.5x 1000x (4.6)² = P₂ + 0.5x 1000x (12.51)²

17.058x 10⁴ = P₂ + 78.25x 10³

  P₂ = 17.058x 10⁴ - 78.25x 10³

  P₂ = 92330 atm

Hence,

The gauge pressure of the water flowing through the constricted segment, P₂ = 92330 atm

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Answer:

meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!!!!!!!!!!!!

Explanation:

Answer:

Halloween, It, Exorcist, Shining, Ring :)

Explanation:

Explanation:

The distance traveled north ward  = 2 miles

       distance traveled south ward  = 3miles

 Displacement is the distance traveled in a specific direction. So, it depend on the start and finish point.

       The displacement  = 3 miles  - 2miles  = 1mile southward

Distance is the total length of path;

        Distance  = 3 miles + 2 miles = 5miles

Answer:

\(f=6.97\times 10^{14}\ Hz\)

Explanation:

Given that,

Wavelength, \(\lambda=430\ nm=430\times 10^{-9}\ m\)

We need to find the frequency of the violet light.

We know that the relation between frequency and wavelength is given by :

\(f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{430\times 10^{-9}}\\\\f=6.97\times 10^{14}\ Hz\)

So, the frequency of violet light is \(6.97\times 10^{14}\ Hz\).

Answer:

when u find out pls lmk! i have the same question and I've been stuck for a while lol

RFID (Radio Frequency Identification) tags have their own transmitter and a power source, typically a battery.

RFID tags are small electronic devices that can be attached to or embedded in various objects, allowing them to be tracked and identified using radio waves.

These tags contain a microchip that stores information about the object they are attached to, and a transmitter that sends this information wirelessly to an RFID reader.

There are two types of RFID tags: active and passive.

Active RFID tags have their own power source (typically a battery) and can transmit information over longer distances than passive tags, which rely on the energy of the RFID reader to transmit their information.

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Answer:

The answer is below hoped it helped

Explanation:

Forces, when unbalanced, cause objects to accelerate. And the direction of the acceleration is the same as the direction of the extra force. Just because an object is moving to the right does not mean there is more right force than left force. Whether the right or the left force is bigger depends on whether the object is speeding up or slowing down. There must be more right force than left force if an object is moving to the right and speeding up. There must be more left force than right force if an object is moving to the right and slowing down.

The elastic potential energy will be =

For a)  7.5J

For d)  1687.5J

For g)  0.675J

For b) 11.718J

For e) 1267.5J

For h) 1080J

For c)  73507.5J

For f)  10.8J

For i)  18750J

According to the formula for calculating elastic potential energy,

Elastic potential energy (u) = 1/2 x spring constant x \((amount of extension)^{2}\)

Let was calculate the value of 1/2 x spring constant to simplify the equation = 1/2 x 15 = 7.5

for a) 7.5 x \(1^{2}\) = 7.5J

for d) 7.5 x \(15^{2}\) = 1687.5J

for g) 7.5 x \(0.3^{2}\) = 0.675J

for b) 7.5 x \(1.25^{2}\) = 11.718J

for e) 7.5 x \(13^{2}\) = 1267.5J

for h) 7.5 x \(12^{2}\) = 1080J

for c) 7.5 x \(99^{2}\) = 73507.5J

for f) 7.5 x \(1.2^{2}\) = 10.8J

for i) 7.5 x \(50^{2}\) = 18750J

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The total force resisting the motion of the car, boat, and trailer is 4053.46 N.

To calculate the total force resisting the motion of the car, boat, and trailer, we need to consider the forces acting on the system. The force exerted by the car on the road is given as 2599 N, and the acceleration produced by the car is 0.693 m/s².

The total force resisting the motion is the sum of the resistive forces acting on the car, boat, and trailer. The resistive force on the car is equal to its mass multiplied by its acceleration, which is (1479 kg) * (0.693 m/s²) = 1024.407 N.

The boat and trailer together have a mass of 621 kg. According to Newton's second law (F = ma), the resistive force acting on the boat and trailer is (621 kg) * (0.693 m/s²) = 430.053 N.

the total force resisting the motion of the car, boat, and trailer is the sum of the forces: 2599 N (car) + 1024.407 N (car resistive force) + 430.053 N (boat and trailer resistive force) = 4053.46 N.

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A DC motor is powered with Ea = 400V, the armature resistance is Ra = 20, the torque constant of the motor is K+ = 1 Nm/A.

The load torque intercepts the motor torque in two places, only one will be positive, drop you will again need to solve = 0. d the given details are Ea = 400VRa = 20K+ = 1 Nm/A

To find; Gear ratio G required to drive this load at its maximum operating speed.

Formula used: θ=K+ * Ia The motor torque, Tm = K+ * Ia The load torque, TL = J * dw / G The armature current, Ia = (Ea - V) / Ra By equating the motor torque and load torque, we have; K+ * Ia = TL The load torque is positive, so we have;TL = J * dw / G Since the load is operating at maximum speed, d w = 0So, TL = 0 = J * 0 / G

Thus, G is not found in the equation.

So, we can conclude that G does not affect the maximum speed of the motor. The maximum speed is determined by the back EMF, Ea, and the motor constants, K+ and Ra.

So, the gear ratio G is irrelevant in determining the maximum speed of the motor.

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Based on the relationship between pressure and volume, the volume of the gas will increase if the pressure of a gas goes from 1 atm to 0.5 atm.

According to ideal gas equation,

PV = nRT

P = Pressure

V = Volume

n = Number of moles

R = Gas constant

T = Temperature

At constant Temperature,

P ∝ 1 / V  → ( 1 )

From ( 1 ), it can be clearly seen that pressure is inversely proportional to volume. So as pressure increases the volume will decrease and if the pressure decreases, the volume will increase. In the given situation, the pressure is decreased. So the volume will increase.

Therefore, the volume of the gas will increase if the pressure of a gas goes from 1 atm to 0.5 atm.

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Answer:

D hope this helps plz mark brainliest

Explanation:

Answer:

Part A

The efficiency of the engine is 10%

Part B

The change in internal energy is 300 J

Part C

The change in volume is 1 m³ which is one cubic meter

Explanation:

Part A

Efficiency is defined as the ratio of energy output to energy input;

The given parameters are;

The distance the car is moved, d = 10 meters

The force which moves the car, F = 100 N

The amount of energy produced by the engine = 1,000 J

Therefore, we have;

The energy output to the car = The work done on the car = Force applied to the car, F × The distance the car moves, d;

∴ The energy output to the car by the engine = F × d = 100 N × 10 m = 1,000 J

The energy input from the engine = The energy produced by the engine = 10,000 J

The efficiency of the engine = (The energy output)/(The energy input)= 1,000J/10,00J = 0.1

The efficiency in percentage = 0.1 × 100 = 10 %

The efficiency of the engine = 10%

Part B

The amount of heat added to the substance, ΔQ = 1,000J

The amount of work the substance does on the atmosphere, W = 700 J

The change in internal energy, ΔU is given as follows;

ΔQ = W + ΔU

∴ ΔU = ΔQ - W

For the substance, we have;

The change in internal energy, ΔU = 1,000 J - 700 J = 300 J

Part C

The work done by the piston, W = 1,000 J

The pressure, in the piston, P = 1,000 Pa = constant

The work done by the piston in a constant pressure process, W = P × ΔV

Where;

W = The work done

P = The constant pressure applied

ΔV = The change in volume = V₂ - V₁

V₂ = The final volume

V₁ = The initial volume

∴The change in volume ΔV = W/P = 1,000 J/(1,000Pa) = 1 m³

The change in volume ΔV = 1 m³

The type of nuclear decay that involves the conversion of a neutron to a proton and the accompanying emission of high-speed electrons from the unstable nucleus is beta decay.

In beta decay, a neutron in the nucleus transforms into a proton, and an electron and an antineutrino are emitted from the nucleus. This process helps to stabilize the nucleus and reduce its overall energy.
The type of nuclear decay you're referring to is called "beta minus decay" (β- decay). In beta minus decay, a neutron is converted into a proton, and an electron (high-speed electron called a beta particle) is emitted from the unstable nucleus.

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Answer:

Electron, proton and neutron

Explanation:

In each and every atom they are consist of electron, proton and neutron.

Thermal insulators stop the loss of accumulated heat, metal flat plates absorb solar radiation, and tubes absorb solar energy with the least amount of heat loss.

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Answer:

The sound will become less noticeable, or deafen.

Explanation:

Answer:

3586

Explanation:

by using formula s=it+0.5at^2

Answer:

\(\fbox {Velocity = 60 m/s, Distance = 3600 m}\)

Explanation:

Part (i) : Velocity at end of 2 minutes

Equation used ⇒ \(\boxed {v = u + at}\)

⇒ t = 2 minutes = 2 x 60 = 120 seconds

⇒ v = 0 + (0.5)(120)

⇒ v = 60 m/s

Part (ii) : Distance covered

Equation used ⇒ \(\boxed {S = \frac{v^{2}-u^{2}}{2a}}\)

⇒ S = (60)² - (0)² / 2(0.5)

⇒ S = 3600 m

Answer:

decreases

Explanation:

halves and the speed remains unchanged.

The expression for the energy stored (E) in a stretched wire of original length (L), cross-sectional area (A), tension (T), and Young's modulus (Y) is given by E = Y * e * ln(L) * A

The work done to stretch the wire can be calculated by integrating the force applied over the displacement. In this case, the force applied is the tension (T) in the wire, and the displacement is the change in length (ΔL) from the original length (L) to the stretched length (L + ΔL).

The tension in the wire is given by Hooke's law, which states that the tension is proportional to the extension of the wire:

T = Y * (ΔL / L)

where Y is the Young's modulus of the material of the wire.

Now, let's calculate the work done to stretch the wire:

dW = T * dL

Integrating this expression from L to L + ΔL:

W = ∫ T * dL = ∫ Y * (ΔL / L) * dL

W = Y * ΔL * ∫ (dL / L)

W = Y * ΔL * ln(L) + C

Here, C is the constant of integration. Since the energy stored in the wire is zero when it is unstretched (ΔL = 0), we can set C = 0.

Finally, the expression for the energy stored in the wire (E) is:

E = W = Y * ΔL * ln(L)

or, if we substitute the cross-sectional area (A) and strain (e) of the wire, where e = ΔL / L:

E = Y * e * ln(L) * A

Thus, the expression for the energy stored (E) in a stretched wire of original length (L), cross-sectional area (A), tension (T), and Young's modulus (Y) is given by:

E = Y * e * ln(L) * A

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To find the cross product of vectors D and E, we can use the formula:

D × E = (Dy * Ez - Dz * Ey)i - (Dx * Ez - Dz * Ex)j + (Dx * Ey - Dy * Ex)k

Given:

D = -5i + 6j - 3k

E = 7i + 8j + 4k

Calculating the cross product:

D × E = ((6 * 4) - (-3 * 8))i - ((-5 * 4) - (-3 * 7))j + ((-5 * 8) - (6 * 7))k

     = (24 + 24)i - (-20 - 21)j + (-40 - 42)k

     = 48i + 41j - 82k

To show that D is perpendicular to E, we need to demonstrate that their dot product is zero. The dot product is given by:

D · E = Dx * Ex + Dy * Ey + Dz * Ez

Calculating the dot product:

D · E = (-5 * 7) + (6 * 8) + (-3 * 4)

     = -35 + 48 - 12

     = 1

Since the dot product of D and E is not zero, it indicates that D and E are not perpendicular to each other. Therefore, D is not perpendicular to E.

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Answer:

33.6 m

Explanation:

Given:

v₀ = 0 m/s

a = 47.41 m/s²

t = 1.19 s

Find: Δx

Δx = v₀ t + ½ at²

Δx = (0 m/s) (1.19 s) + ½ (47.41 m/s²) (1.19 s)²

Δx = 33.6 m

Answer:

t = S / V = 3.8E8 / 3E8 = 1.3 sec

It takes over 1 second for a radio signal to travel between the earth and the moon.

Answer:

Explanation:

im sorry if this doesn't help but i think  its A

Answer:

You'll see it without noticing

Explanation:

for example: Magnets can pull to one thing, but using the other side of the magnet with the other magnet can push away the magnets, and turn it to their way of pulling, also electricity, movement, were making energy everyday, just by moving

Answer:

82 km/h

Explanation:

Given that A boat sailed 560 km in 8 hrs. It took three hours to travel the first 150 km. That is,

The remaining distance will be:

560 - 150 = 410 km

the remaining time will be:

8 - 3 = 5 hours

For the remaining Journey, average speed will be:

Speed = distance/time

Speed = 410/5

Speed = 82 km/h

Therefore, the average speed for the remaining journey will be 82 km/h

Answer:

1. d. a nucleus

2. b. Membrane-bound organelles

3. c. ten time smaller

4. b. animal cell

5. c. Bacteria

Explanation:

Hope this helps... :)

The y-component of the vector if the vector is 14.4 m long and  points in a 133 degree  direction is 9.92m

A vector force is defined as a vector quantity having both magnitude and direction.

If the magnitude of a vector is 14.4m long points in a 133-degree direction, then the y-component of the vector force will be expressed as:

\(v_y = vsin \theta\)

Given the following parameters

\(v = 14.4m\\\theta = 133-90=43^0\)

Substitute the given parameters into the expression

\(v_y=14.4 sin 43^0\\v_y=9.82m\)

Hence the y-component of the vector if the vector is 14.4 m long and  points in a 133 degree  direction is 9.92m

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Answer:

10.5

Explanation:

The equation for the y-component is Asin(theta) so the equation for this problem would be 14.4sin(133) which equals 10.5314933. We round this equation down to 10.5 and that is your answer.