Mrs. LaCross leaves school and accidentally leaves her coffee mug on the roof of her car as shown in the picture below.
She was traveling at a constant pace until a student rushes in front of her not using the sidewalks and crosswalks and she had to slam on her brakes. The mug will then move foward

Why will this happen to her coffee mug?

There is a very small fraction (0.001%) of the water found in the atmosphere due to evaporation of water.

This is defined as mixture of gases surrounding the Earth or other celestial body, held in place by gravity.

A very small fraction (0.001%) of the water in the form of water vapor gas exist in the atmosphere due to evaporation by heat from the Sun.

Read more about Atmosphere here https://brainly.com/question/24925283

Explanation:

Kinetic energy is the energy by virtue of

object's motion whereas Thermal energy is

the internal energy of an object due to the

kinetic energy of its atoms.

On Increasing temperature, they both

increases

Answer:

all of the above I think??

Take the moment Allen sees the moose to be the origin.

First, convert his speed to m/s.

90 km/h = (90 km/h) • (1000 m/km) • (1/3600 h/s) = 25 m/s

(a) For the time it takes him to react (0.85 s), Allen is moving at a constant speed of 25 m/s, so that before he actually does anything, he covers a distance of

(25 m/s) • (0.85 s) = 21.25 m

(b) Once he presses the brakes, Allen's vehicle covers a distance x in time t of

x = 21.25 m + (25 m/s) t + 1/2 a t²

and has a speed v of

v = 25 m/s + a t

It takes him 3.5 s to come to a full stop. Use this to find the acceleration:

0 = 25 m/s + a (3.5 s)

a = - (25 m/s) / (3.5 s)

a ≈ - 7.1 m/s²

After 3.5 s, he will have traveled a total distance of

x = 21.25 m + (25 m/s) (3.5 s) + 1/2 (- 7.1 m/s²) (3.5 s)²

x = 152.5 m ≈ 150 m

(c) This one is worded a bit strangely, specifically "once he presses the brake" seems to suggest instantaneous acceleration, not average. Average acceleration is defined for some duration of time. You're probably expected to report the acceleration of the car as it comes to a stop, which we found earlier to be

a ≈ - 7.1 m/s²

How much time would it take for a 0.17 kg ice hockey puck to decrease its speed by 9.0 m/s if the coefficient of kinetic friction between the ice and the puck is 0.05

Time taken to decrease the speed

Equation :-

[tex]f {\tiny{k} }= u {\tiny{k}}.f \tiny{N}[/tex]

[tex]f {\tiny{N} }= mg = 0.17 \times 10 \\f {\tiny{N} }= 1.7 {N}[/tex]

[tex]u{ \tiny{N}} = 0.05[/tex]

[tex]mg = f {\tiny{k} }= u {\tiny{k}}.f {\tiny{N}} \\ 0.17a = 0.05 \times 1.7 \\ a = 0.05 \times \frac{ \cancel{1.7} {}^{ \: \: 10} }{ \cancel{0.17}} \\ a = 0.5m {s}^{ - 2} [/tex]

change in speed = 9 ms-1 (Given)

[tex]change \: in \: speed = at \\ 9 = 0.5 \times t \\ \frac{9 \times 10}{5} = t \\ \frac{9 \times \cancel{10} {}^{ \: \: 2} }{ \cancel{5}} = t \\ 18 \: sec = t \: [/tex]

Answer:

False

Explanation:

in my point of view the human race has adapted to being greedy in some ways we can save resources but its very rare

hope this helps! : )

The order of magnitude of the final velocity of an object that begins from rest and accelerates at a rate of 20m/s² for 5.0 seconds is 100m/s

​

The acceleration of a body is the change in velocity with respect to time as shown:

[tex]a=\frac{v-u}{t}[/tex]

Given the following parameters

a is the acceleration = 20m/s²

u is the initial velocity = 0m/s

t is the time taken = 5.0seconds

Required

Final velocity "v"

Substitute the given parameters into the formula:

[tex]20=\frac{v-0}{5} \\20 =\frac{v}{5}\\v = 20 \times 5\\v =100m/s[/tex]

Hence the order of magnitude of the final velocity of an object that begins from rest and accelerates at a rate of 20m/s² for 5.0 seconds is 100m/s

​Learn more here: https://brainly.com/question/24175401

Answer:

A.

Explanation:

The liquid with the higher density will be found at the bottom of the glass because is the heaviest of all. The liquids which have a lower density than the liquid at the bottom of the glass will be found at the top of the glass. We assume that the liquids are not soluble in each other because otherwise they will be mixed.

299,792,458 is the right answer

Answer:

Scalar quantity is defined as the physical quantity with magnitude and no direction.

There are plenty of scalar quantity examples, some of the common examples are:

Mass

Speed

Distance

Time

Area

Volume

Density

Temperature

A vector quantity is defined as the physical quantity that has both direction as well as magnitude.

Vector quantity examples are many, some of them are given below:

Linear momentum

Acceleration

Displacement

Momentum

Angular velocity

Force

Electric field

Polarization

Answer:

changes by 9.8 m/s each second.

Answer: D

Explanation: it seem right to me I really don't know if this right but I hope this helps

Answer:

A

   [tex]x = 0.198456 \ m [/tex]

B

    [tex]h  =  1.3061 \  m  [/tex]

C

 [tex]  v =  5.06 \  m/s [/tex]

D

  [tex]d = 4.0273 \  m  [/tex]

Explanation:

Considering the first question

From the question we are told that

   The spring constant is  [tex]k  =  32.50 N/m[/tex]

    The potential energy is  [tex]PE  =  0.640 \ J[/tex]

Generally the potential  energy stored in spring  is mathematically represented as   [tex]PE  =  \frac{1}{2}  *  k  *  x^2[/tex]

=>    [tex]0.640=  \frac{1}{2}  * 32.50  *  x^2[/tex]  

=>    [tex]x = \sqrt{0.03938}[/tex]  

=>    [tex]x = 0.198456 \ m [/tex]  

Considering the second question

 From the question we are told that

   The mass of the dart is  m =  0.050 kg

Generally from the law of energy conservation

         [tex]PE =  mgh[/tex]

=>       [tex]0.640   =  0.050 *  9.8  *  h[/tex]

=>      [tex]h  =  1.3061 \  m  [/tex]

Considering the third  question

   The height at which the dart was fired horizontally is  [tex]H  =   3.90\  m[/tex]

Generally  from the law of energy conservation

         [tex]PE = KE [/tex]

Here  KE is kinetic energy of the dart which is mathematical represented as

     [tex]KE  =  \frac{1}{2}  *  mv^2[/tex]

=>      [tex]0.640 =  \frac{1}{2}  * 0.050 *  v^2 [/tex]

=>       [tex]  v^2 = 25.6 [/tex]

=>       [tex]  v =  5.06 \  m/s [/tex]

Considering the fourth question

Generally the total time of flight of the dart is mathematically represented as

       [tex]t  =  \frac{ 2 *  H }{g}[/tex]

=>     [tex]t  =  \frac{ 2 * 3.90 }{9.8 }[/tex]

=>     [tex]t  =  0.7959 \ s [/tex]

Generally the  horizontal distance from the equilibrium position to the ground is  mathematically represented as

       [tex]d =  v  *   t[/tex]

=>     [tex]d = 5.06  *   0.7959[/tex]

=>     [tex]d = 4.0273 \  m  [/tex]

Answer:

[tex]q=+8.01\cdot 10^{-19}\ coulombs[/tex]

Explanation:

Elementary charge

The elementary charge, denoted by the symbol e is the electric charge carried by a proton or, equivalently, the magnitude of a negative electric charge carried by an electron, which has charge −e.

The value of the elementary charge is a fundamental constant in physics:

[tex]\mathbf{e}=1.60217662 \cdot 10^{-19}\ coulombs[/tex]

If a metal sphere has an excess of +5 elementary charge, then it has a net charge of:

[tex]q=5*\mathbf{e}=+5*1.60217662 \cdot 10^{-19}\ coulombs[/tex]

[tex]\boxed{q=+8.01\cdot 10^{-19}\ coulombs}[/tex]

Answer:

Water isn't wet by itself, but it makes other materials wet when it sticks to the surface of them.

Explanation:

Answer:

water is wet

it is a liquid

Explanation:

Answer:

Since the ball is travelling 32 degrees above the horizontal, the value of Θ is 32

In the figure, v vector is the vertical component whereas h vector is the horizontal component

Using trigonometry:

CosΘ = h /24

Cos 32 = h/  24

0.85 = h / 24

h = 24*0.85

h = 20.4 m/s

Answer: heat always flows from higher temperature to lower temperature

Explanation: there:)

Heat always flows from higher temperature to lower temperature so can not be stored.

The energy present in a system that determines its temperature is referred to as thermal energy. Thermal energy flows as heat. Thermodynamics is a whole field of physics that studies how heat is transmitted across various systems and how work is performed in the process.

Heat dissipation always happen decrease in temperature so thermal energy can not be stored for long time.

Heat always flows from higher temperature to lower temperature so can not be stored

To learn more about thermal energy refer to the link:

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#SPJ2

Answer:

1gm/cm^3

Explanation:

its the answer

25+50-30-40 = 0

north and east are positive directions, south and west are negative

hope this helps

also hope u enjoy a pic of my crush lol

Answer:

because there is a reflection due to light in the the room.

Explanation:

if if it's helped you please mark as brainliest and like and follow please

We can see objects in a bright room because, the object reflect the light falling on them

Answer:

newton 's 3rd law which states that to every action there's equal but opposite reaction

R=A2+B2+2ABcosβ−−−−−−−−−−−−−−−−√R=A2+B2+2ABcosβ

A=4NA=4N , B=3NB=3N , β=90°β=90° , cosβ=0cosβ=0

R=A2+B2−−−−−−−√R=A2+B2

R=42+32−−−−−−√=25−−√=5NR=42+32=25=5N

tanα=Bsin90°A+Bcos90°=34tanα=Bsin90°A+Bcos90°=34

α=37°α=37°

Therefore the resultant of the two forces has a magnitude of 5N5N and is at an angle of 37°37° with respect to

Answer:

9155 years old

Explanation:

We use the following expression for the decay of a substance:

[tex]N = N_0\,\,e^{-k*t}[/tex]

So we first estimate the value of k knowing that the half-life of the C14 is 5730 years:

[tex]N = N_0\,\,e^{-k*t}\\N_0/2=N_0\,\,e^{-k*5730}\\1/2 = e^{-k*5730}\\ln(1/2)=-k*5730\\k= 0.00012[/tex]

so, now we can estimate the age of the artifact by solving for"t" in the equation:

[tex]1/3=e^{-0.00012*t}\\ln(1/3)= -0.00012*t\\t=9155. 102[/tex]

which we can round to 9155 years old.

Answer:

V2 =  23 [m/s] to the left.

Explanation:

In order to solve this problem, we must use the definition of conservation of linear momentum. That is, the momentum is conserved before and after the collision. The values before the collision will be taken to the left of the equality, and the values after the collision will be taken to the right of the equality, in this way we have:

Σbefore = Σafter

ΣPbefore = ΣPafter

where:

P = m*v

The positive momentum will be taken to the right and the negative momentum is to the left in this way we formulate the following equation:

[tex](m_{1}*v_{1}) + (m_{2}*v_{2})=-(m_{1} +m_{2})*v_{3}\\[/tex]

where:

m1 = mass of the first object = 6 [kg]

v1 = velocity of the first object = 5 [m/s]

m2 = mass of the stick = 2 [kg]

v2 = velocity of the stick [m/s]

v3 = velocity of the composite object = - 2 [m/s]

(6*5) + (2*V2) = - (6 + 2)*2

30 + (8*2) = - 2*V2

46 = - 2*V2

V2 = - 23 [m/s]

Note: the negative sign means the stick moves to the left

Answer:

the heat change to 10kg of ice to water 0

so quantity of heat required is answer: 5460 J.

hope its helps!

Answer:

Q=ml+mc∆+ml'

=10*80+10*1*(100-0)+10*540

=800+1000+5400

=7200cal.7.2kcel

L=heat of fusion of ice

L'=heat of vapourisation of water