A Truck Of Mass 8000 Kg Is Moving With A Velocity Of 50 Km/h And Collides With A Bus Of Mass 5000 Kg (2024)

I think you mean "rotated by a string", which is to say a 0.4-kg mass is suspended from a string and swung around in a circle with constant speed.

The centripetal acceleration a of the object is

a = V² / R

where R is the length of the string, 1 m, so that

a = V² / (1 m) = V² m⁻¹

As the mass goes through its uniform circular motion, the only relevant force acting on it is tension with magnitude T, pointing in the direction in which the mass is accelerating (the center of its circular path). By Newton's second law,

T = ma

where m is the object's mass, 0.4 kg. Then

3 N = (0.4 kg) (V² m⁻¹)

⇒ V² = (3 N) / (0.4 kg) •(1 m) = 7.5 m²/s²

⇒ V ≈ 2.74 m/s

The potential to difference across each capacitor assuming the two capacitors are in parallel are;

p.d(0.50-μF) = 4.42Vp.d(1.4-μF) = 1.58V

The charge on each capacitor assuming the two capacitors are in parallel are:

Q(0.5-μF) = 0.58C

Q(1.4-μF) = 1.64C

Capacitors in series and parallel connections

C) The potential difference, p.d for the capacitors connected in series are inversely proportional to the capacitance and are as follows;

p.d(0.50-μF) = (1.4)/(1.9) × 6 = 4.42V

p.d(1.4-μF) = (0.5)/(1.9) × 6 = 1.58V

D) When the connection is parallel, the charge on each capacitor is shared as follows;

First, Total charge, Q = C(total) × V.

where, C(total) = (0.5×1.4)/(1.9) = 0.37-μF.

Q = 0.37 × 6

Q = 2.22C

Hence, the charge is shared as follows;

Q(0.5-μF) = (0.5/1.9) × 2.22 = 0.58C

Q(1.4-μF) = (1.4/1.9) × 2.22 = 1.64C

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A [tex]2.0\ cm \times 2.0\ cm \times 6.0\ cm[/tex] block floats in water with its long axis vertical. The length of the block above water is [tex]3.0\ cm[/tex] , the block's mass density [tex]833.33\ kg/m^3[/tex].

Density is a fundamental physical property that measures how much mass is contained in a given volume of a substance. In other words, it quantifies how tightly packed the particles of a material are within a specific amount of space.

Given information:

The volume of the submerged portion of the block in the water [tex](V_{in water}) = 2 cm \times 2 cm \times 5 cm = 20 cm^3[/tex]

Density of water [tex](d_{water}) = 1000\ kg/m^3[/tex]

The volume of the entire block [tex](V_{block}) = 2 cm \times 2 cm \times 6 cm = 24\ cm^3[/tex]

Acceleration due to gravity [tex](g) = 9.8\ m/s²[/tex]

Using the principle of equilibrium for buoyant forces:

[tex]V_{in water} \times d_{water} \times g = V_{block} \times d_{wood} \times g[/tex]

Solving for the density of wood [tex](d_{wood})[/tex]:

[tex]d_{wood} = (V_{in water} \times d_{water}) / V_{block}\\d_{wood} = (20 \times 1000 ) / 24 \\d_{wood} = 833.33\ kg/m^3[/tex]

Hence, the block's mass density is [tex]833.33\ kg/m^3[/tex].

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Answer:

speed =wavelenght x frequency

v=4.5 x 10 to the -7 x 667=0.3 x 10 to the -4 m/s

speed= distance/time

time=distance/speed

t=4 x 10 to the 16/0.3 x 10 to the -4=13.33 x 10 to the 20 seconds

Explanation:

Answer:

4,200 joules per kilogram per degree Celsius

Explanation:

The specific heat capacity of a material is the energy required to raise one kilogram (kg) of the material by one degree Celsius (°C). The specific heat capacity of water is 4,200 joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C.

Answer:

The current flowing through the circuit and resistors.

Answer:

Place the iron strip on a table. Place one pole of a bar magnet near one end of the iron strip. Move the bar magnet along the length of the iron strip starting from one end to the other end as shown in the following figure. Then, lift the magnet and bring the pole to the starting point and move in the same direction as before. On repeating this process for at least 30-40 times, the iron strip will become a bar magnet with two poles.

Explanation:

Answer:

(b) 90 N.

sorry if i'm wrong thank you

1000 kilometres........

There are two products of the addition of HBr to butadiene.

What is an addition reaction?

An addition reaction is a reaction in which a compound is added across the double bond. We must recall that the compound 1,3-butadiene is a conjugated double bond hence the final products are controlled by resonance effects.

The mechanism of the addition of HBr to 1,3-butadiene is shown in the image attached to this answer.

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Answer:

lightning conductors/rods protect buildings by intercepting lightning strikes that may hit these structures.

Air conditioners pass air over cold coils known as evaporator pipes

Explanation:

Lightning rods are made of highly conductive metal, and offer a path of least resistance for any lightning strikes and are connected to longer wires that ground the charge.

air conditioners use a chemical compound called a refrigerant. the most common refrigerant used is r-134a also know as 1,1,1,2-Tetrafluoroethane. cooling systems use the low boiling points of these refrigerants to constantly cool and compress the chemical to continually move heat from the inside of the system to an external area.

Answer:2 x 10^-5K^-1

Explanation:

The solution is in the attached file

Answer:

It's 340 centimeters.

Explanation:

Multiply it by 100

1 meter = 100 centimeters

3.4 meters x 100 = 340 centimeters

Answer: 340

Answer:

It sort of depends on the factors of which car is bigger and the power that each car holds. However, they both face the same force, as Newtons’ third law of motion states.

Explanation:

Answer:

You would feel the greater Force

Explanation:

Essentially, you and the car have performed an elastic collision, this all correlates to the momentum conservation equation mvf=mvi. So essentially you and the car have to maintain the same momentum at all times because we know it is conserved; so speed would have to change to balance out the momentum of you and the car.

Answer:

It increases as the square of its speed.

Answer:

Explanation:
Mass is increase KE is increase
B/C mass is directly proportional to KE

Compact fluorescent bulbs can produce as much light as incandescent bulbs but with less energy as a result of a result of less amount of heat being emitted.

What is a Bulb?

This consists of wire filament which when heated through the flow of electric current glows.

Compact fluorescent bulbs can produce high amount of light than incandescent bulbs but with less energy because more heat energy is emitted in an incandescent bulb.

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Answer: Incandescent bulbs produce other forms of energy, too, including heat.

Explanation: i took the test

The distance traveled by the car when it completes one lap is 280 m.

What is distance?

Distance can be defined as the measure of the length between two points.

To calculate the distance traveled by the car when it completes one lap, we use the formula below.

Formula:

d = 2πr......................... Equation 1

Where:

d = Distance traveled by the car when it completes one lapr = Radius of the tarckπ = Pie

From the question,

Given:

r = 45 mπ = 3.14

Substitute the values above into equation 1

d = 2(45)(3.14)d = 282.6 md ≈ 280 m.

Hence, The distance traveled by the car when it completes one lap is 280 m.
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The imbalance of electric charges within or on the surface of a material or between materials is known as static electricity. When you grab a doorknob, electrons jump from your hand to the knob .which conducts electricity, giving you a shock.

What is static electricity?

The imbalance of electric charges within or on the surface of a material or between materials is known as static electricity.

The charge will persist until it can be moved away by an electric current or an electrical discharge.

when we walk on the carpet with socks our feet slide electrons off the carpet. it leads to leaving you with a slightly negative static charge.

When you grab a doorknob electrons jump from your hand to the knob which conducts electricity giving you a shock.

Due to the static electricity jump from your hand to the knob .which conducts electricity giving you a shock.

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Answer: What Is pollution?
what are greenhouse gases?

Explanation:

Answer:

light and heat

Explanation:

because they are bouth cundoctors

The potential energy stored in the boulder is 13720 J.

What is potential energy?

This is the energy of a body due to its position in the gravitational field.

To calculate the potential energy stored in the boulder, we use the formula below.

Formula:

P.E = mgh................ Equation 1

Where:

P.E = Potential energy stored in the boulderm = mass of the boulderh = height of the cliffg = acceleration due to gravity

From the question,

Given:

m = 56 kgg = 9.8 m/s²h = 45 meters.

Substitute these given values into equation 1

P.E = 56×45×9.8P.E = 13720 J.

Hence, The potential energy stored in the boulder is 13720 J.
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The metalcore is the central component of any metal that is covered by wires. Metalcore is found in the X denoted area.

What is a solenoid?

A solenoid is a coil of wire that conducts an electric current. A solenoid is an electromagnet made out of a wire or helical coil.

When an electric current is sent through the coil, it produces a magnetic field. A solenoid is a coil that generates a magnetic field when an electric current passes through it.

When a conductive wire is used to build a loop, a solenoid is formed.

Hence the metalcore is found in the given X area.

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Answer: b

Explanation:

edge

Answer:

One well-known application of density is determining whether or not an object will float on water. If the object's density is less than the density of water, it will float; if its density is less than that of water, it will sink. ... In fact, submarines dive below the surface of the water by emptying their ballast tanks.

HOPE IT HELPS

Answer:

Explain how the property of density is applied and used in the real world

One well-known application of density is determining whether or not an object will float on water. If the object's density is less than the density of water, it will float; if its density is less than that of water, it will sink. ... In fact, submarines dive below the surface of the water by emptying their ballast tanks.

Explanation:

[tex]hope \: it \: will \: help \: you \: \\ kai6418[/tex]

Answer:

E: visible light

Explanation:

Answer:

Seems like theres a handout to go with this so i'm not sure on the exact answer. But I would assume it is that there is very little fossil evidence for this period. This would probably be linked to the KT-4 boundary which has little to no fossils because its time period was during the mass extinction, which killed all dinosaurs and majority of living organisims.

Answer:

13.44 m/s

Explanation:

Force = mass • acceleration

12 N = 0.625 kg • acceleration

19.2 m/s/s = acceleration

19.2 m/s/s • 0.7 s = 13.44 m/s

Answer:

P waves, or Primary waves, are the first waves to arrive at a seismograph. P waves are the fastest seismic waves and can move through solid and liquids

Explanation:

Answer:

reflection of light is the bending of light from one medium to another