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
Dovator [93]
3 years ago
15

PLEASE HELP!!!! I’ll give brainliest!

Physics
1 answer:
Jet001 [13]3 years ago
3 0
Ok well I know measure of long leg is 30 degrees and short leg is 60 degrees
You might be interested in
A ship is travelling due east at 30 km/hr and a boy runs across the deck
dsp73

Answer:

Vr = 20 [km/h]

Explanation:

In order to solve this problem, we have to add the relative velocities. We must remember that velocity is a vector, therefore it has magnitude and direction. We will take the sea as the reference measurement level.

Let's take the direction of the ship as positive. Therefore the boy moves in the opposite direction (Negative) to the reference level (the sea).

V_{r}=30-10\\V_{r}=20 [km/h]

8 0
3 years ago
What is one way that early scientific practice differed from modern scientific practice?
mote1985 [20]
Early hypotheses were not based on observations.
Early hypotheses were not tested by experimentation.
Early hypotheses were formed from scientific questions.
Early hypotheses were influenced by creative thinking
6 0
3 years ago
Read 2 more answers
A paleontologist estimates that when a particular rock formed, it contained 12 mg of the radioactive isotope potassium-40, which
leva [86]

Answer:

t = 2.52 billion \:years

Explanation:

As we know by radioactivity law

N = N_o e^{-\lambda t}

so here we will have

N = 3 mg

N_o = 12 mg

now we will have

3 = 12 e^{-\lambda t}

\lambda t = ln 4

now we also know that

\lambda = \frac{ln2}{1.26 \times 10^6 yrs}

t = 1.26\times 10^6\times \frac{ln4}{ln2}

t = 2.52 billion \:years

7 0
3 years ago
A city bus travels along its route from Jackson Street 8 km to Aurora Avenue, where it turns and continues 13 km.
Elina [12.6K]

im a bit confused on what the question is:(

if its just asking for the total number of km traveled it would be 21 km

3 0
2 years ago
8. How is the crystal size different for extrusive and intrusive igneous rocks?
eduard
<span>Igneous rocks which form by the crystallization of magma at a depth within the Earth are called intrusive rocks. Intrusive rocks are characterized by large crystal sizes, i.e., their visual appearance shows individual crystals interlocked together to form the rock mass.  hope that helped</span>
7 0
3 years ago
Other questions:
  • Blocks A (mass 2.00 kg ) and B (mass 14.00 kg , to the right of A) move on a frictionless, horizontal surface. Initially, block
    11·1 answer
  • An unwary football player collides with a padded goalpost while running at a velocity of 9.50 m/s and comes to a full stop after
    15·1 answer
  • What was Einstein's theory of relativity?
    6·1 answer
  • Explain what it means when we say a substance is magnetic. That is type of substance which produce magnetic field
    7·1 answer
  • Asteroid A has 3.5 times the mass and 2.0 times the velocity of Asteroid B. If
    13·1 answer
  • If Star A is twice as far as Star B, and they are identical in all other ways, then the
    5·1 answer
  • The amount of thermal energy that is gained or lost by an object depends on what three things
    11·1 answer
  • A highway curve with radius 80 m is to be banked so that a car traveling 21 m/s will not skid sideways even in the absence of fr
    8·1 answer
  • Write a conclusion to this lab in which you discuss when a person on a roller coaster ride would have sensations of weightlessne
    9·1 answer
  • A boy takes 20 minutes to cover 3.2 km on a bicycle find the speed in km/hr​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!