1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Gennadij [26K]
3 years ago
15

Why is ice harder than liquid water?

Physics
1 answer:
yaroslaw [1]3 years ago
6 0
Hello~ 

Ice is harder than liquid water because<span> the molecules of ice are linked more tightly together than the molecules of liquid water. 

Hope this helps! </span>
You might be interested in
the value of acceleration due to gravity option A is same on equator and poles option B is list on poles option C is list on equ
stiks02 [169]

Answer:

D. Increases from pole to equator

Explanation:

I majored in Science

8 0
3 years ago
Lord Beckett and members of the EIT Co. spot the Black Pearl in the distance making its way towards land. As a
KATRIN_1 [288]

Answer:

Explanation:

The cannonball goes a horizontal  distance of 275 m . It travels a vertical distance of 100 m

Time taken to cover vertical distance =  t ,

Initial velocity u = 0

distance s = 100 m

acceleration a = 9.8 m /s²

s = ut + 1/2 g t²

100 = .5 x 9.8 x t²

t = 4.51 s

During this time it travels horizontally also uniformly so

horizontal velocity Vx = horizontal displacement / time

= 275 / 4.51 = 60.97 m /s

Vertical velocity Vy

Vy = u + gt

= 0 + 9.8 x 4.51

= 44.2 m /s

Resultant velocity

V = √ ( 44.2² + 60.97² )

= √ ( 1953.64 + 3717.34 )

= 75.3 m /s

Angle with horizontal Ф

TanФ = Vy / Vx

= 44.2 / 60.97

= .725

Ф = 36⁰ .

6 0
2 years ago
3. Christina is on her college softball team, and she is practicing swinging the bat. Her coach wants her to work on the speed a
inessss [21]

Answer:

The average angular acceleration is  \alpha =125.487 rad /s^2

Explanation:

From the question we are told that

  From the question we are told that

        The length of the bat is l = 0.85m  \

         The initial linear velocity is  u = 0 m/s

         The time is  t = 0.15s

         The velocity at t is  v = 16 m/s

  Generally average  angular acceleration is mathematically represented as

                \alpha  = \frac{w_f - w_o}{t}

        Where w_f is the finial angular velocity which is mathematically evaluated as  

            w_f = \frac{v}{l}

                  w_f = \frac{16}{0.85}

                        = 18.823 rad/s

 and w_o is the initial angular velocity which is zero since initial linear velocity is zero

               So

                         \alpha  = \frac{18.823 - 0}{0.15}

                               \alpha =125.487 rad /s^2

5 0
3 years ago
Which of these is an example of a mechanical wave?
OLga [1]
Your answer is A, Ocean Waves- because A mechanical wave is a wave that is an oscillation of matter, and therefore transfers energy through a medium. Ocean waves do just that :)
Hope this helps!!
6 0
3 years ago
The coordinates of a bird flying in the xy-plane are given by x(t)=αt and y(t)=3.0m−βt2, where α=2.4m/s and β=1.2m/s2.part a:Cal
8090 [49]
Α=2.4 \frac{m}{s}

β=1.2 \frac{m}{s^2}

x(t)=at

y(t)=3-βt^2

Vx(t)=α

Vy(t)=-2βt

vectorV=[α;-2βt]

ax(t)=0

ay(t)=-2βt

vector a [0;-2βt]


3 0
3 years ago
Other questions:
  • Which of the following is created when the ice of a comet starts to melt into gases?
    12·1 answer
  • The process by which you group things based on their similarities is known as classifying.
    6·1 answer
  • Why do FM stations drop out at shorter distances from their source than AM:?
    13·1 answer
  • A force of 15 N acts upon a 3 kg block. Calculate the acceleration of the object.
    12·1 answer
  • How is the motion of an object affected when a force acts on it?
    15·1 answer
  • (URGENT- Due today.)
    5·1 answer
  • You throw a stone upward from the top of a building at an angle of 25° to the horizontal and with an initial speed of 15 m/s. I
    7·1 answer
  • 5. A sunbather at the beach absorbs the thermal energy from the sun through
    15·1 answer
  • M
    14·1 answer
  • Calculate the mass of a truck traveling at 30.56 m/s that has a starting momentum of 77,000 kg*m/s
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!