All categories

3 years ago

When a solid turns to a gas, does it have to go through the liquid state first

Physics

2 answers:

Mariulka [41]3 years ago

8 0

Answer:

Yes

Explanation:

At a given temperature, most chemical compounds and elements can possess one of the three different states of matter at different pressures. In these cases, the transition from the solid to the gaseous state requires an intermediate liquid state.

DerKrebs [107]3 years ago

7 0

Answer:

Sublimation

Explanation: When a solid goes straight to a gas it's called sublimation.

You might be interested in

What are the answers for numbers 2 & 3?

ivolga24 [154]

The answer is 6 i no this because im in high school this app is for high schoolers now I'll answer more. of ur questions if u make them have more points now u shouldn't play this game because ur prob in elementary but any ways the answer is 6

8 0

3 years ago

The National Transportation Safety Bureau indicates that a person in a car crash has a reasonable chance of survival if his or h

Aleks [24]

We can use constant acceleration equation to solve for the distance.

Formula is:

Vf^2 = Vi^2 + 2ad

where Vf^2 is final velocity squared, Vi^2 is initial velocity squared, a is acceleration (or deceleration) and d is the distance.

we want the car to come to complete stop, that is, Vf^2 be equal to zero.

Therefore, the equation becomes 0 = Vi^2 + 2ad. Solving for d we get:

d = (-(Vi)^2)/2a). We can ignore the minus sign since acceleration is really deceleration.

We know initial velocity (23m/s) and we know acceleration (max= 300 m/s^2). Plugging these in, we get:

d = ((23 m/s)^2)/(2* 300m/s^2) = 0.88m

hope that helps

4 0

4 years ago

Six automobiles are initially traveling at the indicated velocities. The automobiles have different masses and velocities. The d

Mumz [18]

Answer:

Part a)

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part b)

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part c)

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Explanation:

Red car

mass = 1000 kg

speed = 10 m/s

Yellow car

mass = 2000 kg

speed = 5 m/s

Blue car

mass = 500 kg

speed = 20 m/s

Light Blue car

mass = 1000 kg

speed = 20 m/s

Green car

mass = 500 kg

speed = 10 m/s

Purple car

mass = 4000 kg

speed = 5 m/s

Part a)

Now we know that momentum of each car is product of mass and velocity

so we will have

Red Car

$P_1 = m v$

$P_1 = (1000)(10)$

$P_1 = 10^4 kg m/s$

Yellow Car

$P_2 = m v$

$P_2 = (2000)(5)$

$P_2 = 10^4 kg m/s$

Blue Car

$P_3 = m v$

$P_3 = (500)(20)$

$P_3 = 10^4 kg m/s$

Light Blue Car

$P_4 = m v$

$P_4 = (1000)(20)$

$P_4 = 2\times 10^4 kg m/s$

Green Car

$P_5 = m v$

$P_5 = (500)(10)$

$P_5 = 5 \times 10^3 kg m/s$

Purple Car

$P_6 = m v$

$P_6 = (4000)(5)$

$P_6 = 2\times 10^4 kg m/s$

So the momentum is given as

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part b)

Impulse is given as change in momentum so here we can say that final momentum of all the cars will be zero as they all stops and hence the impulse is same as initial momentum of the car

so the order of impulse from largest to least is given as

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part c)

Force is defined as rate of change in momentum

Now let say all cars will stop in same time interval

so we will have

$Force = \frac{impulse}{time}$

so we will have

force is in same order as that of impulse

so it is given as

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

5 0

4 years ago

Read 2 more answers

9 The friction between the car and the mud is equivalent to the__________________.

kakasveta [241]

Answer: e. None

Explanation: when the car goes into the muddy area, then the friction force on the tire is too small so the wheels are turned and slipped. Friction in this case is beneficial

5 0

3 years ago

The cooler star, the most ____ it is. a) more luminous b) more blue c) redder

Anna71 [15]

Answer:

c. more redder

def not blue cuz thats hottest and def not luminous

3 0

3 years ago

Read 2 more answers