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stepladder [879]
4 years ago
14

Snow tends to sublime outside during cold, clear winter days when the atmospheric pressure is low. During this process,

Physics
2 answers:
Tanya [424]4 years ago
8 0
<span>B) the temperature of the water is decreasing. </span>
S_A_V [24]4 years ago
7 0
I believe the answer is A
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HELP PLEASE I NEED AN A FOR THIS TO PASS
inessss [21]

Answer:

D: The velocity increases during the time periods labeled A and C

Explanation:

Since gravity pulls us down to Earth, it will pull down the ball faster when the ball is falling.

4 0
3 years ago
How do cell phone hammers disable the communication between cell phones and nearby towers
Kryger [21]
Basically, it sends out a signal that is the same frequency as your phone. This signal is powerful enough to outmuscle your phone's signal.
8 0
3 years ago
If the speed of a motor scooter doubles, which of the following also doubles? 1)kinetic energy 2) acceleration 3) momentum 4) al
emmasim [6.3K]

Answer:

3

Explanation:

-The formula for kinetic energy is the following:

K.E.=\frac{1}{2}mv^{2}

where:

K.E. is kinetic energy

m is mass

v is velocity

Here we can see that kinetic energy is proportional to the velocity squared, so if the speed or velocity of the scooter doubles then this would quadruple its kinetic energy.

-The acceleration is the rate of change of velocity per unit of time. A scooter could double its speed with a constant acceleration, so an increase in speed doesn't necessarily mean an increase in acceleration.

-The formula for momentum is the following:

p=mv

where:

p is momentum

m is the mass of the object

v is the objects velocity

Here we can see that the momentum is directly proportional to the velocity, so if the scooter where to double its velocity then it would also double its momentum.

6 0
4 years ago
If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance, aft
8_murik_8 [283]

Answer:

Explanation:

Using the equation of motion v = u + at to get the speed at which the object would be travelling.

v is the final speed (in m/s)

u is the initial velocity (in m/s)

a is the acceleration (in m/s²)

t is the time taken (in  secs)

Given parameters

u = 0m/s

t = 10s

a = g = 9.8m/s²

Substituting this values into the formula;

v = 0+9.8(10)

v = 0+ 98

v  = 98m/s

<em>Hence the rock will be travelling at a speed of 98m/s.</em>

6 0
3 years ago
If the loading is 0.4, the coinsurance rate is 0.2, the number of units of medical care is 100, and the number of units of medic
s344n2d4d5 [400]

Answer:

72  is the premimum of the insurance.

Explanation:

Below is the given values:

The loading = 0.4

Coinsurance rate = 0.2

Number of units = 100

Total number of units = 100 * 0.4 = 40

Remaining units = 60 * 0.2 = 12

Add the 60 and 12 values = 60 + 12 = 72

Thus, 72  is the premimum of the insurance.

8 0
3 years ago
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