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
ss7ja [257]
3 years ago
14

Select the correct answer. What was the main objective of the Discovery missions?

Physics
1 answer:
Nimfa-mama [501]3 years ago
6 0

Answer:

A

Explanation:

exploration surrounding our universe will give us a better understanding of it.

You might be interested in
Which transformation of energy occurs in a hydroelectric power plant?
zysi [14]

D. Kinetic energy to electrical energy


8 0
3 years ago
Can Hockey players hold the puck with their open hand?
devlian [24]

Answer:

Yes they can stop or bat the puck with their open hand

Explanation:

8 0
3 years ago
A piece of wire length 30cm and cross sectional area of 0.5mm^2 has a resistance of 5ohms at 20°c. It is then heated to a temper
Grace [21]

Answer:

8.333*10^-6 ohms

Explanation:

Resistivity of a material is expressed as;

p = RA/l

R is the resistance of the material

A is the cross sectional area

l is the length of the material

Given

R = 5 ohms

A = 0.5mm^2

A = 5 * 10^-7m^2

l = 30cm  = 0.3m

Substitute into the formula;

p = (5 *  5 * 10^-7m^2)/0.3

p = 25 * 10^-7/0.3

p = 0.0000025/0.3

p = 8.333*10^-6

Hence its resistivity at 20 degrees Celsius is 8.333*10^-6 ohms

7 0
3 years ago
which of the following describes the principle of conversation of charge? a.charge is created b. a charge can be transferred c.
victus00 [196]
B) in Physics, charge conservation is the principle that the total electric charge in an isolated system never changes. The net quantity of electrical charge, the amount of positive charge minus the amount of negative charge in the universe is always conserved.
7 0
3 years ago
* A 5 kg ball is dropped from a height of 20 m. How much kinetic energy will it have 10 m above the ground? a. 490 J b. 392 J C.
Oksi-84 [34.3K]

Answer:

A. 490

Explanation:

soln

mass = m = 5kg

Height = h = 10m

Acceleration due to gravity = g = 9.8ms²

K.E = 1/2 × mass × (velocity)²

Recall from equations of motion

v² = u² + 2gh

Therefore,

K.E = 1/2 × mass × ( u² + 2gh)

K.E = 1/2 × 5 × ( 0² + 2×10×9.8)

K.E = 1/2 × 5 × 196

K.E = 1/2 × 980

K.E = 490 Joules

6 0
2 years ago
Other questions:
  • If a tree falls in the middle of the woods and nobody is around to hear it, does it make a sound?
    5·2 answers
  • Microwaves and infrared waves are similar because they both have
    13·1 answer
  • A skier starting from rest skis straight down a slope 50 meters long in 5.0 seconds. What is the magnitude of the acceleration.
    6·1 answer
  • How could winds influence the temperature
    15·1 answer
  • A ball is thrown directly upwards. Is there a point of trajectory where the ball has zero acceleration
    6·1 answer
  • The diameter of a steel rod is 56.47 ± 0.02mm<br>What does it mean....... please ​
    9·1 answer
  • 4. A car travels 3 km due North, then 5 km East Represent
    12·1 answer
  • What are the control variables in your investigation ?
    14·2 answers
  • A bike travels at 20mph for 5 hours, then 10 mph for 3 hours. What is the average speed?
    13·1 answer
  • On what factors does the gravity of a planet depend ?​
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!