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
mart [117]
3 years ago
13

một vật được ném từ đỉnh toàn nhà cao 20m so với mặt đát với vận tốc ban đàu 12m/s hợp với phương ngang một góc 30 độ. tính khoả

ng cách từ vị trí vật chạm đất đến chân tòa nhà (gốc O)
Physics
1 answer:
Helga [31]3 years ago
5 0

Sorry don't know which language is this can't understand O_o

You might be interested in
This picture shows human red blood cells. The human body contains about 5 million red blood cells per cubic milliliter. This mea
Elanso [62]

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

                  Hello!

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

❖ The correct answer choice is B) is multicellular. When something is multicellular, it consists of two or more cells. When something is unicellular, it consists of only one cell and in this case we have 5 million red blood cells so that wouldn't make sense.

~ ʜᴏᴘᴇ ᴛʜɪꜱ ʜᴇʟᴘꜱ! :) ♡

~ ᴄʟᴏᴜᴛᴀɴꜱᴡᴇʀꜱ

4 0
3 years ago
You are an astronaut in space far away from any gravitational field, and you throw a rock as hard as you can. The rock will:
Nesterboy [21]

Answer:

the rock will continue at the same speed unless it is affected by another force such as gravity and so if you threw it it will continue to move unless affected by a force

Explanation:

this is because Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by the action of an external force.

7 0
3 years ago
Calculate the wave length of a water wave with a speed of 20 m/s and a frequency of 2.5 Hz
12345 [234]

Wavelength of the water wave is 8 m

Explanation:

  • Wavelength measures the distance between two successive crests or troughs of the wave. It is given by the following equation

λ = v/f, where f is the frequency, v is the velocity of the wave

Here, v = 20 m/s and f = 2.5 Hz

⇒ λ = 20/2.5

      = 8 m

5 0
3 years ago
Mass, size and color are examples of ___
BigorU [14]
The short answer (and the long one for that matter) is physical properties of chemicals. If you are being marked by a machine, likely the answer is going to be physical properties. 
6 0
3 years ago
A sound wave travels in air toward the surface of a freshwater lake and enters into the water. The frequency of the sound does n
Shkiper50 [21]

Answer:

Explanation:

velocity of sound in air at 20⁰C is 343 m /s

velocity of sound in water at 20⁰C is 1481 m /s

The wavelength of the sound is 2.86 m in the air so its frequency

= 343 / 2.86 = 119.93 .

This frequency of  119.93 will remain unchanged in water .

wavelength in water = velocity in water / frequency

= 1481 / 119.93

= 12. 35 m .

7 0
3 years ago
Other questions:
  • The four diagrams above show two magnets, X and Z. They are different distances apart in each diagram. In which diagram will mag
    9·2 answers
  • What is the relationship between temperature, dew point temperature, and air pressure
    13·1 answer
  • A physics department has a Foucault pendulum, a long-period pendulum suspended from the ceiling. The pendulum has an electric ci
    10·1 answer
  • You watch distant Sally Homemaker driving nails into a front porch at a regular rate of 1 stroke per second. You hear the sound
    13·1 answer
  • CAN SOMEONE PLEASE HELP ME ASAP PLEASE !!!!!​
    15·1 answer
  • A football player kicks a football downfield. The height of the football increases until it reaches a maximum height of 15 yards
    12·2 answers
  • Which describes the type of image formed by a plane mirror?
    12·2 answers
  • What would the charge be on an ion with 8 protons 7 neutrons and 6 elements?
    11·1 answer
  • How much force is applied if a 130kg mass is accelerated at 5 m/s^2?​
    12·1 answer
  • Please please please help
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!