A 1622 kg car has a speed of 11 m/s when it hits a tree. The tree doesn't move and the car comes to rest. Find the amount of work done by the car as its front is pushed in.

The volume in milliliters that 2.00 g of air will occupy if the density is 1.29 g/l is 1.55 x 10^3 ml.

The volume of the gas can be calculated by using the following formula: Volume = (mass / density)From the given information, the mass (m) of the gas is 2.00 g, and the density (d) is 1.29 g/L.So, Volume = (mass / density)= 2.00 g / 1.29 g/L = 1.55 LWe need to convert the volume to milliliters because the options are given in milliliters.1 L = 1000 mLTherefore, 1.55 L = 1.55 x 1000 mL = 1,550 mLThus, the volume in milliliters that 2.00 g of air will occupy if the density is 1.29 g/l is 1.55 x 10^3 ml.

Air is a mixture of different gases that mainly consists of 78% nitrogen, 21% oxygen, and 1% other gases such as argon, carbon dioxide, neon, helium, and hydrogen. The density of air is approximately 1.29 g/L at standard temperature and pressure (STP), which is defined as 0°C (273.15 K) and 1 atm (101.325 kPa) of pressure. This means that the mass of 1 L of air is 1.29 g.The volume of the gas can be calculated by using the following formula: Volume = (mass / density)From the given information, the mass (m) of the gas is 2.00 g, and the density (d) is 1.29 g/L.So, Volume = (mass / density)= 2.00 g / 1.29 g/L = 1.55 LWe need to convert the volume to milliliters because the options are given in milliliters.1 L = 1000 mLTherefore, 1.55 L = 1.55 x 1000 mL = 1,550 mLThus, the volume in milliliters that 2.00 g of air will occupy if the density is 1.29 g/l is 1.55 x 10^3 ml.

To know more about volume visit :-

https://brainly.com/question/28058531

#SPJ11

Answer:

hope its helpful to uh...

Answer:

Distance: 17 km

Displacement: 7 km

Explanation:

The distance is the total measure of how much he moved.

The displacement is the straight line between the star point and the end point

Because they act on different objects.

Answer:

Explanation:

The distance will be the total distannce covered during the journey.

If you move 3 meters East and move 4 meters north, then the distance will be calculated as;

Distance = distnace through East+distance through north

Distance = 3m + 4m

Distance = 7m

Displacement is the distance covered in a specified direction. It is the shortest distance covered by me. This can be gotten using the Pythagoras theorem.

d² = 3²+4²

d² = 9+16

d² = 25

d = √25

d = 5m

Hence the displacement of the object is 5metres

Power tools must be used since all interior walls are reinforced is a consideration when forcing interior walls.

The correct option is  C.

The load of the floor or roof construction above them is supported by load-bearing walls, also referred to as "bearing walls." They are made to transfer weight from the roof to the foundation by passing through the flooring. A bearing wall, also known as a load-bearing barrier or a structural wall, supports the entire weight of the home. This wall assists in distributing the weight of the building from the roof to the base, and its loss could lead to the building collapsing.

Tom proposes going up to the attic or basement to check which direction the joists run to see if a wall is load-bearing. The wall is still most likely not load-bearing if it runs parallel to the joists.

To know more about Load-bearing visit:

https://brainly.com/question/11158855

#SPJ13

The complete question is -

What is a consideration when forcing interior walls?

A-The wall coverings often hide interior metal framing.

B-The walls may be load-bearing and affect structural integrity.

C-Power tools must be used since all interior walls are reinforced.

D-Forcing the wall will require firefighters to work in a team of two.

The suitable method to determine the age of the surface of terrestrial planets is the crater counting. Because, as the age of the planet increases, its crater count also increases.

Crater counting a proper method to estimate the age of a planet's surface. Based on this method an assumption is made that the a piece of new planetary surface doesn't have impact craters.

The rate of accumulation of impact craters increases with the age of the planetary surface.  Counting the number craters per given area helps to determine how long they have created there and thus, how long the surface has formed.

Dating of samples with radioactive isotopes is used find the age of rocks. Similarly measuring atmospheric thickness and color analysis does not give an idea about the age of the surface of planets. Hence, option c is correct.

To find more on crater counting, refer here:

https://brainly.com/question/1184201

#SPJ1

(a) The moment of inertia of the device about its center is approximately 0.279 \(kg\cdot m^2\).

(b) The angular speed of the rotating device is approximately \(\omega=6.28 \frac{rad}{s}\).

(c) The magnitude of the angular momentum of the rotating device is approximately 1.75 \(\frac{kg\cdot m^2}{s}\)

(a) To calculate the moment of inertia of the device about its center, we need to consider the contributions from each component. The moment of inertia of a point mass rotating about an axis is given by the formula:

The moment of inertia of the device about its center is given by the sum of the individual contributions:

\(\[I = I_{\text{{red}}} + I_{\text{{blue}}} + I_{\text{{rod}}}\]\)

For the red balls at the ends of the rod:

\(\[I_{\text{{red}}} = 2 \times (0.66 \, \text{{kg}}) \times (0.26 \, \text{{m}})^2\]\)

For the blue balls:

\(\[I_{\text{{blue}}} = 2 \times (0.38 \, \text{{kg}}) \times (0.13 \, \text{{m}})^2\]\)

The moment of inertia of the rod can be approximated as negligible compared to the masses of the balls.

I=0.279 \(kg\cdot m^2\)

(b) The angular speed of the rotating device can be calculated using the formula:

\(\[w = \frac{2\pi}{T}\]\)

where \(\(T\)\) is the time taken to make one full rotation. In this case, (T) is given as 1.0 second:

\(\[w = \frac{2\pi}{1.0 \, \text{{s}}}\]\)

\(\omega=6.28 \frac{rad}{s}\)

(c) The magnitude of the angular momentum of the rotating device can be calculated using the formula:\(\[L = I \times w\]\)

Substituting the calculated values of (I) and (w), we can find the angular momentum.

L= 1.75 \(\frac{kg\cdot m^2}{s}\)

Learn more about moment of inertia here:

brainly.com/question/30051108

#SPJ11

The S.I. unit of E is NC^-1 and that of B is NA^-1 m^-1, then unit of E/B is A m/C (ampere meter per coulomb). This unit represents the ratio between the electric field and the magnetic field, indicating the strength and direction of the electromagnetic field.

The SI unit of electric field (E) is NC^(-1) (newton per coulomb) and the SI unit of magnetic field (B) is NA^(-1) m^(-1) (tesla). To determine the unit of E/B, we need to divide the unit of E by the unit of B.

Dividing the unit of E (NC^(-1)) by the unit of B (NA^(-1) m^(-1)), we can simplify the expression:

E/B = (NC^(-1))/(NA^(-1) m^(-1))

To simplify this expression, we can cancel out the common units in the numerator and denominator:

E/B = (N/C)/(N/(A m))

Now, let's simplify further by dividing the numerator and denominator:

E/B = (N/C) * (A m/N)

Canceling out the common units:

E/B = (A m)/(C)

Therefore, the unit of E/B is A m/C (ampere meter per coulomb).

For more such questions on SI unit, click on:

https://brainly.com/question/16393390

#SPJ8

Answer:

Explanation:

i believe a if not c

The car engine provide force , F = 7242 N. if A 795 kg car starts from rest and travels 41 m in 3.0 s.

In Physics, force is defined as: The push or pull on an object with mass causes it to change its velocity. Force is an external agent capable of changing a body's state of rest or motion. It has a magnitude and a direction.

In science, the word 'force' has a precise meaning. At this level, it is completely appropriate to describe a force as a push or a pull. A force is not something that an object contains or 'has in it'.

To know more about force visit:

https://brainly.com/question/13191643

#SPJ1

Answer:

I completely agree with the first person's response.

Explanation:

They deserve Brainliest. Have a great summer.

Answer:

254 m/s

Explanation:

(Vf-Vi) = at

(Vf-14)= 60 (4)

Vf = 254 m/s

Answer:

t = 3.44 s

Explanation:

We are given;

Fired from rest, and so; u = 0 m/s

Final speed; v = 170 m/s

Height above flat ground; y_o = 58 m

Height at starting point; y = 0 m

Thus, from Newton's equation of motion, we have;

y - y_o = ut - ½gt²

(since it's motion is against gravity)

Plugging in the relevant values, we have;

0 - 58 = 0 - (½ × 9.8 × t²)

-58 = -4.9t²

t² = 58/4.9

t = √(58/4.9)

t = 3.44 s

Answer:

2.08 m  (2 d.p.)

Explanation:

Constant Acceleration Equations (SUVAT)

\(\boxed{\begin{array}{c}\begin{aligned}v&=u+at\\\\s&=ut+\dfrac{1}{2}at^2\\\\ s&=\left(\dfrac{u+v}{2}\right)t\\\\v^2&=u^2+2as\\\\s&=vt-\dfrac{1}{2}at^2\end{aligned}\end{array}} \quad \boxed{\begin{minipage}{4.6 cm}$s$ = displacement in m\\\\$u$ = initial velocity in ms$^{-1}$\\\\$v$ = final velocity in ms$^{-1}$\\\\$a$ = acceleration in ms$^{-2}$\\\\$t$ = time in s (seconds)\end{minipage}}\)

When using SUVAT, assume the object is modeled as a particle and that acceleration is constant.

-------------------------------------------------------------------------------------

When a body is projected through the air with initial speed (u), at an angle of θ to the horizontal, it will move along a curved path.

Therefore, trigonometry can be used to resolve the body's initial velocity into its vertical and horizontal components:

Since the projectile is modeled as moving only under the influence of gravity, the only acceleration the projectile will experience will be acceleration due to gravity.

If the ball is kicked at an initial velocity of 20 m/s from flat ground at an angle of 45.9° then:

The horizontal component of velocity is constant, as there is no acceleration horizontally.

Resolving horizontally, taking → as positive:

\(s=35 \quad u=20 \cos 45.9^{\circ} \quad v = 20 \cos 45.9^{\circ} \quad a=0\)

\(\begin{aligned}\textsf{Using} \quad s&=\left(\dfrac{u+v}{2}\right)t\\\\35&=\left(\dfrac{20 \cos 45.9^{\circ}+20 \cos 45.9^{\circ}}{2}\right)t\\35&=(20 \cos 45.9^{\circ})t\\t&=\dfrac{35}{20 \cos 45.9^{\circ}}\\\implies t&=2.51468288...\; \sf s\end{aligned}\)

Therefore, the time is takes for the ball to reach the crossbar is 2.51 s.

Acceleration due to gravity = 9.8 ms⁻²

Resolving vertically, taking ↑ as positive:

\(u=20 \sin 45.9^{\circ} \quad a=-9.8 \quad t=2.51468288...\)

\(\begin{aligned}\textsf{Using} \quad s&=ut+\dfrac{1}{2}at^2\\\\s&=(20 \sin 45.9^{\circ})(2.51468288...)+\dfrac{1}{2}(-9.8)(2.51468288...)^2\\s&=36.1171982...-30.9857870...\\\implies s&=5.131411132...\; \sf m\end{aligned}\)

To find by how much the ball clears the crossbar, subtract the height of the crossbar (3.05 m) from found the vertical height of the ball at 2.51 s:

\(\implies 5.13141132...-3.05=2.08\; \sf m\;(2 \: d.p.)\)

Therefore, the ball clears the crossbar by 2.08 m (2 d.p.).

Answer:

b. Rollerblading.

Explanation:

Rollerblading involves balances.

The time needed to achieve the orbital insertion is 841.3 s.

The time needed to achieve orbital insertion is calculated by applying Newton's second law of motion as follows;

F = ma

where;

F = m(v/t)

where;

t = (mv)/F

t = (4235 x 498) / (2507)

t = 841.3 seconds

Thus, the time needed to achieve the orbital insertion is determined from Newton's second law of motion.

Learn more about Newton's second law of motion here: https://brainly.com/question/25545050

#SPJ1

Answer:

d = 1.19 m

Explanation:

Given that,

The force applied by the ball, F = 39.6 N

The work done on the catchers glove is 47.5 J

We need to find the distance traveled by the ball. We know that,

Work done, W = Fd

Where

d is the distance traveled

\(d=\dfrac{W}{F}\\\\d=\dfrac{47.5 }{39.6 }\\\\d=1.19\ m\)

So, it will cover 1.19 m.

Given

Mass of one of the object is doubled and the distance between the object is doubled.

To find

What happens to the gravitational force

Explanation

The gravitational force is directly proportional to the masses and inversely proportional to the distance between them

Keeping all other parameters constant,

So when the mass doubles and the distance doubles we have,

Conclusion

A. The gravitational force becomes half as great.

Answer:

The yo-yo :)

Explanation:

Answer:

C. Oxygen combines with carbon dioxide

Explanation:

B i o l o g y

Also, oxygen is a reactant and carbon dioxide is a product of cellular respiration that does not combine during this process

Hope it helps

Answer:

The correct option is;

The atoms and molecules of the liquid water are moving, while the atoms and molecules of the glass are not moving

Explanation:

Matter that exist in the liquid or gaseous state consist of molecules that move freely about in the entire containing medium for gas, while the molecules move freely  in the portion of the container occupied by the fluid in the case of liquid fluids

However, the molecules of a solid are fixed within the current shape of the solid and are only free to vibrate within a fixed location and the allow the passage of subatomic particles such as electrons

As such, the glass cup being a solid, consists of molecules fixed in space, while the liquid water consists of molecules which can translate within the portion of the volume of the glass filled with the water.

The mass of the given will be 20kg.

By using formula,

force = mass x acceleration

mass = force / acceleration

mass = 400 N / 20m/s²

mass = 20 Kg

Acceleration is the rate at which an object's velocity with respect to time changes. They are vector quantities, accelerations. The direction of the net force acting on an object determines the direction of its acceleration.

Any process where the velocity changes is referred to as acceleration. There are only two ways to accelerate: changing your speed or changing your direction, or changing both. This is because the velocity is both a speed and a direction.

To know more about vector quantities :

https://brainly.com/question/774036

#SPJ9

The terrestrial worlds that may still be geologically active are Earth and Venus only.

Earth and Venus are the two terrestrial worlds in our solar system that exhibit evidence of ongoing geological activity. Earth is well-known for its active tectonic plate movements, volcanic eruptions, and seismic activity. These processes are driven by the internal heat generated through radioactive decay and convection in the mantle.

Venus, despite its harsh conditions, shows signs of recent volcanic activity and potential tectonic movements. It has lava flows, volcanic domes, and evidence of resurfacing. However, the Moon and Mercury are considered geologically inactive.

The Moon lacks significant volcanic and tectonic processes due to its smaller size and cooling interior, while Mercury's internal activity has mostly ceased, leaving it relatively inactive.

To know more about tectonic plate movements visit:

https://brainly.com/question/30805154

#SPJ11

The answer for (iv) is;

E.M.F of the battery refers to the chemical energy in the battery that is being converted into electrical energy for the flow of electrons to carry current in a circuit.

Answer:

1-B, 2-A, 3-D, 4-C

Explanation:

1. The force exerted is, F = 35 N

  Distance the box is moved, d = 4 m

  So the amount of work done is, W = F x d

                                                            = 35 x 4

                                                            = 140 Newton-meters

2. Work done, W  = 420 Nm

   Time, T = 3 seconds

   Therefore, the power required is,

   \($P=\frac{W}{T}$\)

   \($P=\frac{420}{3}$\)

       = 140 joules

3. The force exerted is, F = 1.2 N

  Distance the box is moved, d = 5 m

  So the amount of work done is, W = F x d

                                                            = 1.2 x 5

                                                            = 6 Newton-meters

4. Work done, W  = 120 Nm

   Time, T = 20 seconds

   Therefore, the power required is,

   \($P=\frac{W}{T}$\)

   \($P=\frac{120}{20}$\)

       = 6 joules

Answer:

A mousetrap makes use of a simple machine called a lever.

Explanation:

In a second-class lever the effort force is at the other end, with the load in the middle. In a third-class lever, the load is at the end and the effort force is between the fulcrum and the load. When you set the mousetrap, you are using a second-class lever. Sorry if I get this wrong. I am in 5th grade! ♥

Answer:

a) \( \Delta U = 7.5 kJ \)

b) \(T_{f} = 900 K \)

Explanation:

a) To find the change in its internal energy (U) we need to use the following equation:

\( \Delta U = W + Q \)

Where:

W: is the work done on the system

Q: is the energy transferred into the system by heat = 12.5 kJ

Since we have an isobaric expansion, the work is:

\( W = - P\Delta V = - P(V_{f} - V_{i}) \)

Where:

\(V_{f}\): is the final volume = 3.00 m³

\(V_{i}\): is the initial volume = 1.00 m³

P: is the pressure = 2.50 kPa

\( W = -P(V_{f} - V_{i}) = -2.5 \cdot 10^{3} Pa(3.00 m^{3} - 1.00 m^{3}) = -5.00 \cdot 10^{3} J \)

Now, we can find the change in its internal energy:

\( \Delta U = W + Q = -5.00 \cdot 10^{3} J + 12.5 \cdot 10^{3} J = 7.5 \cdot 10^{3} J \)

b) The final temperature can be found as follows:

\( \frac{V_{i}}{V_{f}} = \frac{T_{i}}{T_{f}} \)

\( T_{f} = \frac{T_{i}*V_{f}}{V_{i}} = \frac{300 K*3.00 m^{3}}{1.00 m^{3}} = 900 K \)

Hence, the final temperature is 900 K.

I hope it helps you!

Answer:

B: Pure Substance

Explanation: