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
laiz [17]
3 years ago
14

Trigonometry Help, question posted below @AL2006

Physics
1 answer:
Oxana [17]3 years ago
8 0
It's ' D '.

-- Period:  The angle is (pi/2 · t). 
From t=0 to t=4 sec, the angle changes by 2pi.  So the period is 4 sec.

-- Amplitude:  The biggest the cosine can ever be is 1 .
When the cosine part is 1, 'd' is 6, so the amplitude of the model is 6 .

-- Position when t=0:
When t=0, the angle in the cosine is zero.
The cosine of zero is 1 .
So when t=0, d=6 .  There you are.
You might be interested in
Help me with the question in the image I provided​
inna [77]

Answer: 10 s, 30 m/s , 150 m

Explanation:

Given

The speed of motorcyclist is  u_1=15\ m/s

The initial speed of a police motorcycle is u_2=0\ m/s

acceleration of police motorcycle is a=3\ m/s^2

Police will catch the motorcyclist when they traveled equal distances

distance traveled by motorcyclist in time t is

\Rightarrow s_1=15\times t

Distance traveled by Police in time t is

\Rightarrow s_2=u_2t+\frac{1}{2}at^2\\\Rightarrow s_2=0+0.5\times 3\times t^2

put s_1=s_2

\Rightarrow 15t=0.5\times 3\times t^2\\\\\Rightarrow t(1.5t-15)=0\\\\\Rightarrow t=\dfrac{15}{1.5}=10\ s

Police officer's speed at that time is

\Rightarrow v_2=u_2+at\\\Rightarrow v_2=0+3\times 10=30\ m/s

Distance traveled by each vehicle is

\Rightarrow s_1=s_2=15\times t=15\times 10=150\ m

8 0
2 years ago
Which BEST describes the difference between speed and velocity?
kirill [66]

Answer : The correct option is, (D) Velocity includes rate of change and direction.

Explanation :

Speed : Speed is defined as the distance traveled by an object with respect to the time taken. It is a scalar quantity that means it tell us about the magnitude of an object not direction.

Velocity : Velocity is defined as the rate of change of position of an object with respect to the time. It is a vector quantity that means it tell us about the magnitude and direction of an object.

The only difference between the speed and the velocity is that the velocity tell us about magnitude and direction but speed tell us about magnitude only.

Hence, the correct option is, (D) Velocity includes rate of change and direction.


6 0
3 years ago
Read 2 more answers
What is the difference between polarization and induction?
nalin [4]
In which it is the plane in which charges move. for example in electromagnetic waves polarization<span> means the plane in which electrons oscillate. ... it is the distribution of electric charges (electron) in an object. </span>induction<span> of charges takes place in some insulators just by some mechanical interaction such as rubbing</span>
3 0
3 years ago
Do heavier bowling balls go faster than lighter ones?
Effectus [21]
Piper rockelle and I just got off the phone number
7 0
3 years ago
Read 2 more answers
A 9.0-V battery moves 20 mC of charge through a circuit running from its positive terminal to its negative terminal. How much en
dem82 [27]

Answer:

E = 0.18 J

Explanation:

given,

Potential of the battery,V = 9 V

Charge on the circuit, Q = 20 m C

                                        = 20 x 10⁻³ C

energy delivered in the circuit

E = Q V

E = 20 x 10⁻³ x 9

E =  180 x 10⁻³

E = 0.18 J

Energy delivered in the circuit is equal to E = 0.18 J

7 0
3 years ago
Other questions:
  • What are the magnitude and direction of the force the pitcher exerts on the ball? (enter your magnitude to at least one decimal
    15·2 answers
  • A sound wave has a frequency of 295 Hz and travels the length of a football field, 91.4 m in 0.506 s. What is the period of the
    8·1 answer
  • The chewing muscle, the masseter, is one of the strongest in the human body. It is attached to the mandible (lower jawbone) as s
    15·1 answer
  • What is determined by motion and the spacing of particles?
    9·1 answer
  • Maria drove to the store and then to work.
    14·1 answer
  • Find the 7th term of the geometric sequence<br>1/8, 1/2, 2, ...<br>​
    10·1 answer
  • There are two groups of waves with the same amplitude. One contains waves of short wavelength and the other has waves of long wa
    7·1 answer
  • Question 7 of 10
    10·1 answer
  • Who do you think the target market of these advertisements is? Explain.
    14·1 answer
  • Write two example in which chemical energy is converted into heat energy ​
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!