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
o-na [289]
3 years ago
11

What are the uses of rockets ​

Physics
1 answer:
lora16 [44]3 years ago
8 0

They are used to be able to go out of Earth and into space to Be able to explore and toBe able to prove and tell about Earth and space

You might be interested in
Your heart pumps 80 g of blood with each beat. The blood starts from rest and reaches a speed of 0.60 m/s in the aorta. If each
Gala2k [10]

Answer:

d. 0.3 N

Explanation:

Force: This is defined as the product of mass of a body and its acceleration.

The S.I unit of Force is Newton (N).

Mathematically Force can be represented as,

F = ma .................. Equation 1

Where F = force, m = mass, a = acceleration.

also

a = (v-u)/t............... Equation 2

Where v = final velocity, u = initial velocity, t = time.

Given: v = 0.60 m/s, u = 0 m/s ( From rest), t= 0.16 s.

Substitute into equation 2

a = (0.60-0)/0.16

a = 3.75 m/s²

Also given: m = 80 g = 0.08 kg.

Substitute into equation 1,

F = 0.08(3.75)

F = 0.3 N.

Hence he average force = 0.3 N

The right option is d. 0.3 N

6 0
3 years ago
9. When making a circuit, why is gold wiring not used?
daser333 [38]

Answer:

Gold is not used for making electric wires because it is too rare, and too costlier than Copper. Silver and copper are used for making wires. Copper is almost used in electric lines

4 0
3 years ago
A flat coil of wire consisting of 15 turns, each with an area of 40 cm 2, is positioned perpendicularly to a uniform magnetic fi
zheka24 [161]

Answer:

0.54 A

Explanation:

Parameters given:

Number of turns, N = 15

Area of coil, A = 40 cm² = 0.004 m²

Change in magnetic field, ΔB = 5.1 - 1.5 = 3.6 T

Time interval, Δt = 2 secs

Resistance of the coil, R = 0.2 ohms

To get the magnitude of the current, we have to first find the magnitude of the EMF induced in the coil:

|V| = |(-N * ΔB * A) /Δt)

|V| = | (-15 * 3.6 * 0.004) / 2 |

|V| = 0.108 V

According to Ohm's law:

|V| = |I| * R

|I| = |V| / R

|I| = 0.108 / 0.2

|I| = 0.54 A

The magnitude of the current in the coil of wire is 0.54 A

6 0
3 years ago
Which forces always push in the opposite direction of motion slow stuff down.
VARVARA [1.3K]
Friction- the external force that acts on objects and causes them to slow down when no other external force acts upon them.
8 0
3 years ago
Read 2 more answers
while spinning in a centrifuge a 70.0 kg astronaut experiences an acceleration of 5.00 g, or five times the acceleration due to
ollegr [7]

Answer:

Explanation:

70.0(5.00)(9.81) = 3,433.5 = 3430 N

4 0
2 years ago
Other questions:
  • You attach a 1.10 kg block to a horizontal spring that is fixed at one end. You pull the block until the spring is stretched by
    8·1 answer
  • Which of the following is a ferromagnetic material
    13·2 answers
  • Jessica took a mylar balloon outside on a very cold day. As she waited for the bus the balloon began to shrink. What is the best
    7·1 answer
  • A vehicle in for repair has a burst upper radiator tank. Technician A says thermostat that was stuck in the open position could
    5·1 answer
  • What happens to light that shines on an object but is not transmitted?
    9·1 answer
  • An object has 16N of force being applied to the right, 16N of force being applied to the left, and 4N of force being applied dow
    14·1 answer
  • If the angle of incidence is 30°, what is the value of the
    15·2 answers
  • How is mercury obtained and separated from other nearby substances?
    10·1 answer
  • A 20 kg mass is moving at 10 m/s and collides with a stationary 5 kg mass, transferring all its momentum in the collision, what
    7·1 answer
  • When using the lens equation, a negative value as the solution for di indicates that the image is real. Virtual. Upright. Invert
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!