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
nata0808 [166]
4 years ago
13

Andrea was watching her brother in the ocean and noticed that the waves were coming into the beach at a frequency of 0.777778 Hz

. How many waves hit the beach in 27 s? Answer in units of waves.
Physics
1 answer:
Stolb23 [73]4 years ago
3 0
8 wave units I guess I tried it should be the answer though
You might be interested in
The instantaneous speed of a particle moving along one straight line is v(t) = ate−6t, where the speed v is measured in meters p
beks73 [17]

Answer:

v_max = (1/6)e^-1 a

Explanation:

You have the following equation for the instantaneous speed of a particle:

v(t)=ate^{-6t}   (1)

To find the expression for the maximum speed in terms of the acceleration "a", you first derivative v(t) respect to time t:

\frac{dv(t)}{dt}=\frac{d}{dt}[ate^{-6t}]=a[(1)e^{-6t}+t(e^{-6t}(-6))]  (2)

where you have use the derivative of a product.

Next, you equal the expression (2) to zero in order to calculate t:

a[(1)e^{-6t}-6te^{-6t}]=0\\\\1-6t=0\\\\t=\frac{1}{6}

For t = 1/6 you obtain the maximum speed.

Then, you replace that value of t in the expression (1):

v_{max}=a(\frac{1}{6})e^{-6(\frac{1}{6})}=\frac{e^{-1}}{6}a

hence, the maximum speed is v_max = ((1/6)e^-1)a

5 0
3 years ago
Looking at group 2 on the periodic table which of these elements probably has the lowest ionic radius
lakkis [162]
I think the answer is Helium.

Please tell me if I'm wrong.
7 0
3 years ago
What would be the projectile's initial speed?
zalisa [80]

Math is the process of using the given information, along with
all the general stuff that you know, to find the missing information. 
With no given information, we have no way to even guess at
an answer.

8 0
3 years ago
Thermal conduction mostly involves the motion of
Iteru [2.4K]
Thermal conduction mostly involves the motion of
ELECTRONS
7 0
3 years ago
Gravitational force becomes (stronger/weaker)as mass increases
Mashcka [7]
Stronger.....................becasue gravitational force is force pulling all matter (anything that has mass and occupies space) . The more the matter (which also includes mass), the more the gravitational force.
<span>So, the answer is stronger. </span>
3 0
4 years ago
Read 2 more answers
Other questions:
  • A ball is attached to the end of a massless string. A circus clown twirls the string with a pulling force of 12 N, and the ball
    11·2 answers
  • Calculate the wavelength of violet light with a frequency of 750×10 to the 12
    12·2 answers
  • In an amusement park rocket ride, cars are suspended from 3.40-m cables attached to rotating arms at a distance of 5.90 m from t
    10·1 answer
  • A 1.0-kg block is released from rest at the top of a frictionless incline that makes an angle of 37° with the horizontal. An unk
    12·1 answer
  • A beverage can is thrown upward and then falls back down to the floor. As usual, a y axis extends upward (positive direction). W
    6·1 answer
  • During a storm, a car traveling on a level horizontal road comes upon a bridge that has washed out. The driver must get to the o
    14·1 answer
  • Truck pull the car 2350 KG a distance of 25 m. If they car accelerates from 3M/S to 6M/S, what’s the average force exerted on th
    13·2 answers
  • Calculate the amount of horizontal force needed to make a 0.4 kg soccer ball accelerate at 250 m/s2when kicked.
    7·1 answer
  • NEED HELP A 400 Ω resistor is connected across 200 V. What current will flow?Single choice.
    15·1 answer
  • You find a rock that is about 20 grams large. This rock contains about 10 grams of Uranium-235 and 10 grams of the element it de
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!