3. A beach ball is inflated to a volume of 25L of air at 15°C. During the afternoon,
the volume increases by 1L. What is the new temperature outside?

Answer:

Explanation:

T = 25 s

25 = 2*pi*sqrt(L/9.8)

L = 155.14 m

The weight of the space probe of mass 1000 kg is 24790 N.

Weight is the product of mass and gravitational acceleration

To calculate the weight of the Jupiter, we use the formula below.

Formula:

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, The weight of the space probe is 24790 N.

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Answer:

[tex]\huge\boxed{\sf a = 6.4 \ m/s^2}[/tex]

Explanation:

Horizontal Force = 40 N

Frictional Force = 8 N

Mass = m = 5 kg

Acceleration = a = ?

[tex]\displaystyle a =\frac{F}{m}[/tex]

Since frictional force is opposing force, the resultant force will be horizontal force minus frictional force.

So,

Force = 40 - 8

Force = 32 N

So,

[tex]\displaystyle a = \frac{F}{m} \\\\a =\frac{32}{5} \\\\a = 6.4 \ m/s^2\\\\\rule[225]{225}{2}[/tex]

It take 1.33 second to a Dalmatian to accelerate from rest to its top speed.

Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. Si unit of acceleration is meter/second² (m/s²).

given parameters:

initial speed, u = 0

final speed, v =16.5 m/s.

distance covered, s = 11 meters.

We have to find: time t = ?

We know that:

s = ut +(v-u)t/2

⇒ 11 = 0 + (16.5 -0)t/2

⇒ t = 22/16.5 second = 1.33 second.

So,  it take 1.33 second to a Dalmatian to accelerate from rest to its top speed.

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The first step towards a bill becoming a law is for the bill to be introduced in Congress.

Next, the bill goes to a committee to be marked up, dropped, or sent to the floor.

After that, the bill is debated on the floor and can pass with a majority vote of the house that sponsored it.

In the next stage, the bill must go to the other chamber, to repeat the process.

After the bill is resolved in the conference committee, it goes to the president.

The Congress is sometimes referred to as Senate and it can be defined as a deliberative assembly or council of elected citizens found in the upper chamber or house of a bicameral legislature.

This ultimately implies that, Congress is a federal legislative arm of government of the United States of America, which is saddled with the responsibility of enacting and passing federal laws and bills for the citizens, with the steps enumerated above.

Generally speaking, the first step of making bill to become a law is introducing it to the Congress while the last step is the resolution of a bill if it is voted in favor by at least 44 senators, and then it finally goes to the president for assent through his or her signature.

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Complete Question:

Use the drop down menus to complete the sentences.

The first step in a bill becoming a law is for the bill to be _____.

Next the bill goes to _____ to be marked up, dropped or sent to the floor.

After that, the bill is debated on the floor and can pass on a majority vote of ____.

In the next stage, the bill must go to the ____ to repeat the process.

After the bill is resolved in the ____, it goes to the president.

Answer:

25g

Explanation:

According to a quick internet search, the half-life of I-131 is 8 days.

The amount left after 16 days can be calculated with the radioactive exponential decay formula:

[tex]A_(_t_)=A_0e^(^\frac{\ln(.5)}{T}^)^t[/tex]

Where:

[tex]A_(_t_)[/tex] = the amount left as a function of time

[tex]A_0[/tex] = the original amount (100g)

T = the half-life of the isotope (8d)

t = time (16d)

So:

[tex]A_(_t_)=A_0e^(^\frac{\ln(0.5)}{T}^)^t\\A_(_t_)=(100g)e^(^\frac{\ln(0.5)}{8d}^)^(^1^6^d^)\\A_(_t_)=(100g)e^-^2^(^\ln(2))[/tex]

[tex]A_(_t_)=25g[/tex]

This answer is intuitive because the isotope has been through two half-lives:

[tex]100g(\frac{1}{2})(\frac{1}{2})=25g[/tex]

The distance of the fish, given that a sound pulse was heard 0.10s later is 148.1 m

Speed is related to distance according to the following formula:

Speed = distance / time

Cross multiply

Distance = speed × time

Using the above formula, we can determine the distance of the fish. Details below:

Distance = speed × time

Distance = 1481 × 0.10

Distance = 148.1 m

Thus, we conclude that the distance of the fish is 148.1 m

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The force between the magnet and the can is the noncontact force. The attraction between the magnet and the can is a pull. Therefore, option B and C are correct.

A magnet can be described as a material that produces a magnetic field and this magnetic field is responsible for the properties of a magnet. The properties magnet is such a force that pulls ferromagnetic materials, such as steel, iron, cobalt, etc., towards it.

A permanent magnet can be described as an object made of a material that can be magnetized and creates its own magnetic field. These type of materials are strongly attracted to a magnet, is known as ferromagnetic, and consist of the elements iron, nickel, and cobalt.

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Your question was incomplete, most probably the complete question was,

Mr. wang works in a recycling center recyclable materials arrive at the center mixed together workers use magnets to separate steel cans from other items which two statements are true about the force between a steel can and a magnet:

A) Gravity pushes the can toward the magnet.

B) The force between the magnet and the can is the noncontact force.

C) The attraction between the magnet and the can is a pull

D)  The attraction between the magnet and the can is a push.

Hope this answer helps you

The horizontal component of force be 61.28 N.

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. The application of force is the location at which force is applied, and the direction in which the force is applied is known as the direction of the force.

Given that:

A gardener is driving a lawnmower with a force of 80N that makes an angle of 40° degree with the ground.

So, horizontal component of force be = 80 cos40° N = 61.28 N.

Hence, the horizontal component of force be 61.28 N.

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Once the hydrogen in the core of a star runs out,  then the element, Helium begins to fuse.

Helium begins to fuse, once the core of a star runs out, as helium is then, the only lightest element left in the core of the star.

The energy produced in the fusion processes decreases, as heavier and heavier element starts to fuse. Stars become the main sequence stars after they fuse hydrogen.

Once the hydrogen in the core runs out,  the stars could not hold against gravity more, thereby increasing the pressure and temperature in the core of the star.

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The force between the two point charge when they are separated by 18 cm is 3 N

Coulomb's law states as follow:

F = Kq₁q₂ / r²

Cross multiply

Fr² = Kq₁q₂

Kq₁q₂ => constant

F₁r₁² = F₂r₂²

Where

With the above formula, we can obtain the force between the two point charge when they are 18 cm apart. Details below:

F₁r₁² = F₂r₂²

27 × 6² = F₂ × 18²

972 = F₂ × 324

Divide both side by 324

F₂ = 927 / 324

F₂ = 3 N

Thus, the force when they are 18 cm apart is 3 N

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Answer:

it won't move unless it has momentum

Explanation:

In the case described above, there are at least three possible scenarios:

In any of the above cases, the correct step to take, if it is possible is for both scientists to meet, review notes and jointly execute a third investigation. This is because, in science, the guesswork only happens during hypothesis formulation.

Once a principle has been established via experimentation and properly documented, the same research can be replicated in any other location by any other person with the end results being the same if they all follow the exact report documented when the investigation was deemed successful.

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When two items with different temperatures come in contact with one another, energy moves from the hotter (higher temperature) object to the cooler (lower temperature) object until both objects reach the same temperature.

Once the temperatures are identical, there is no net heat transfer since the quantity of heat transported from one object to the next and the amount of heat radiated are equal.

Temperature change is one of the main consequences of heat transfer: Cooling brings down the temperature while heating brings it up.

Experiments reveal that three factors—the change in the substance's temperature, its mass, and specific physical characteristics associated to the substance—have an impact on how much heat is transported to or from a substance.

Therefore, When two items with different temperatures come in contact with one another, energy moves from the hotter (higher temperature) object to the cooler (lower temperature) object until both objects reach the same temperature.

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The water pressure at the bottom of the 54-m-high water tower is

pressure of water at a certain depth is calculated using the formula

Pressure, P = height * density * acceleration due to gravity

density of water is given by = 1000 kg/m³

acceleration due to gravity is given by = 9.82 m/s²

the given height, at the bottom of the 54-m-high water tower  = 54 m

Pressure = 1000 kg/m³ *  9.82 m/s² * 54 m

Pressure = 530280 N/m²

Pressure = 0.53 M N/m²

Pressure = 0.53 M Pa

The pressure at the bottom of the 54-m-high water tower is 0.53 MPa

The unit of pressure used here is Pa which is equal to N/m² other unit include pound - force foot

1 N/m² = 0.73756 pound-force foot

530280 N/m² = 530280 * 0.73756 = 391113.32 pound-force foot

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Answer: Height of object = 29.13475

Hope this helps!

Answer: 29.12 Meters.

Explanation:

Answer: 8.0 m/s2

Explanation:

F = ma

a = F/m

F = 12,000 N

m = 1,500 kg

a = 12,000 N / 1,500 kg = 8.0 m/s2

Floods are the most common type of natural disaster, occurring when an overflow of water submerges normally dry land.

Floods are frequently caused in coastal areas by heavy rainfall, rapid snowmelt, or a storm surge from a tropical cyclone or tsunami.

Flooding has a negative impact on people's lives. Damage to property and infrastructure Road closures, erosion, and landslides are all possible.

It leads to destruction of houses and properties.

In order to control flooding, it is important to clear the gutters and have an adequate channel for water to pass.

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A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m. The force is 80 Newton.

What is Force?

A force is an effect that can alter an object's motion according to physics. A force can cause an object with mass to accelerate when it changes its velocity, for as when it moves away from rest. An obvious way to describe force is as a push or a pull.

A force is a vector quantity since it has both magnitude and direction. It is calculated using the newton SI unit (N). Force is denoted by the letter F. (formerly P).

The net force acting on an object is equal to the rate at which its momentum varies over time, according to Newton's second law in its original formulation. This law says that an object's acceleration is constant if the object's mass is constant.

Therefore,  A hungry polar bear does -40J of the work and stops the salmon. If the polar bear applied its force over 0.5m. The force is 80 Newton.

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Answer:

Explanation:

10 different sequences

Explanation:

Total frictional force = 500 N

Magnitude of frictional force on 10 kg block = 500 N/3 = 166.67 N

Magnitude of frictional force on 15 kg block = 500 N/3 x 2 = 333.33 N

Direction of frictional force on 10 kg block = Left

Direction of frictional force on 15 kg block = Left

The horizontal distance travelled by the fish when dropped is 131.25 m.

The time of motion of the fish from the given height is calculated by applying the following kinematic equation as shown below.

h = vt + ¹/₂gt²

where;

h = 0 + ¹/₂gt²

t = √ ( 2h / g )

t = √ ( 2 x 135 / 9.8 )

t = 5.25 seconds

The horizontal distance travelled by the fish when dropped is calculated as;

X = vt

X = 25 m/s  x  5.25 s

X = 131.25 m

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Answer:

The initial angular velocity of the bus wheel:

ω₀  ≈ 15.6 rad / s

Explanation:

Given:

V₀ = 8.22 m/s - Starting speed of the bus

V= 0 m/s - Final speed of the bus (the bus has stopped)

ω = 0 rad/c - Final angular velocity of the bus wheel

t = 13.3 s - Bus deceleration time

R = 0.530 m - Bus wheel radius

____________________

ω₀ - ?  - The initial angular speed of the wheels.

1) Bus linear acceleration module:

a = ( V₀ - V) / t = (8.22 - 0) / 13.3 ≈ 0.62 m/s²

2) Bus angular accelerations module:

ε = a / R = 0.62 / 0.530 ≈ 1.17 rad / s²

3) The initial angular velocity of the bus wheel:

ω₀ = ε·t  = 1.17·13.3 ≈ 15.6 rad / s

The power used by the dryer to spin the drum and produce heat is 11000 Watts.

Power is simply the quantity of energy transferred per unit time.

This is expressed as;

P = v × I

Where v is voltage and I is current.

Given that;

Plug the given values into the above formula and solve for P.

P = v × I

P = 220V × 50A

P = 11000 Watts

Therefore, the power used by the dry is 11000 Watts.

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Answer:

Speed = (2πr)/t = (2π x 12 m)/2.1 s = 28.6 m/s

Acceleration = (vf-vi)/t = (28.6 m/s - 0 m/s)/2.1 s = 13.6 m/s^2

Answer:

D - Water

Explanation:

Explanation:

0.98

The coefficient of static friction is calculated by dividing the force required to set the chair in motion (112 N) by the weight of the chair (12 kg). This gives us 112/12 = 9.3. The coefficient of static friction is equal to the ratio of the force required to set the chair in motion to the weight of the chair, so 9.3/9.8 = 0.98.

The rank of the forces in order of increasing magnitude is Fg < FB < FA.

option D is the correct answer.

The net force on an elevator moving upwards is determined by the force of gravity acting downwards and the normal force of the elevator acting upwards.

That is, the two forces acting on a person when he is moving in an elevator are:

When the two forces are of equal magnitude, the elevator will be static or moving with constant velocity.

When the magnitude of the two force are unequal, then the elevator will be accelerating upward or downward.

Since the elevator is moving upwards, it implies that the normal force is greater than the force of gravity acting downwards.

The box at the bottom will feel much heavier due to the weight of box and gravity acting downwards.

FA = FB + Fg

Thus, the force exerted on box A is the greatest, followed by the force on box B and then, the smallest is force of gravity.

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