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
GaryK [48]
3 years ago
6

A 10 foot rope ladder hangs over the side of a boat with the bottom rung on the surface of the water. The rungs are one foot apa

rt, and the tide goes up at the rate of 6 inches per hour. How long will it be until three rungs are covered
Physics
1 answer:
MakcuM [25]3 years ago
8 0
Im not sure but i think its 4ft

hope this helps

You might be interested in
What does the principle of superposition help scientists determine?
dybincka [34]

Answer:

B

Explanation:

the exact and absolute age of a rock layer

8 0
3 years ago
Read 2 more answers
4. O/N 15/P11/Q11
anygoal [31]

Answer:

B) 4500 Pa

Explanation:

As pressure is force per unit area,

P = F/A

It stands to reason that the smallest pressure for a given force is when it is shared by the largest area.

The possible areas are

0.30(0.40) = 0.12 m²

0.30(0.50) = 0.15 m²

0.40(0.50) = 0.20 m²

The pressure when the face with the largest area (0.20 m²) is down is

P = 900 / 0.20 = 4500 N/m² or 4500 Pa

the other possible pressures would be

900/0.15 = 6000 Pa

900/0.12 = 7500 Pa

which are both larger than our solution.

5 0
3 years ago
(no links or files) How can an electromagnetic wave transmit energy?
AnnyKZ [126]

Answer:B

Explanation: I think this is the answer

8 0
3 years ago
Read 2 more answers
Help please, I don't get it​
Sergio [31]

Answers:

a) \hat F=(0.83,-0.55) N

b) \hat D=(-0.44,-0.89) m

c) \hat V=(-0.47,0.88) m/s

Explanation:

A unit vector is a vector whose magnitude (length) is equal to 1. This kind of vector is identified as \hat v and the way to calculate is as follows:

\hat v=\frac{\vec v}{|v|}

Where:

\vec v=(x,y) is the vector

|v|=\sqrt{x^{2}+y^{2}} is the magnitude of the vector

Having this information clarified, let's begin with the answers:

a) Force Vector

\vec F=(9.0 \hat i - 6.0 \hat j) N

Magnitude of \vec F:

|F|=\sqrt{(9.0 \hat i)^{2}+(-6.0 \hat j)^{2 }}N=10.81 N

<u />

<u>Unit vector:</u>

\hat F=\frac{\vec F}{|F|}

\hat F=\frac{(9.0 \hat i - 6.0 \hat j) N}{10.81 N}

\hat F=\frac{9.0}{10.81} N-\frac{6.0}{10.81}N

\hat F=(0.83,-0.55) N

b) Displacement Vector

\vec D=(-4.0 \hat i - 8.0 \hat j) m

Magnitude of \vec D:

|D|=\sqrt{(-4.0 \hat i)^{2}+(-8.0 \hat j)^{2 }}m=8.94 m

<u />

<u>Unit vector:</u>

\hat D=\frac{\vec D}{|D|}

\hat D=\frac{(-4.0 \hat i - 8.0 \hat j) m}{8.94 m}

\hat D=\frac{-4.0}{8.94} Nm+\frac{-8.0}{8.94}m

\hat D=(-0.44,-0.89) m

c) Velocity Vector

\vec V=(-3.50 \hat i + 6.50 \hat j) m/s

Magnitude of \vec V:

|V|=\sqrt{(-3.50 \hat i)^{2}+(6.50 \hat j)^{2}}m/s=7.38 m/s

<u />

<u>Unit vector:</u>

\hat V=\frac{\vec V}{|V|}

\hat V=\frac{(-3.50 \hat i +6.50 \hat j) m/s}{7.38 m/s}

\hat V=\frac{-3.50}{7.38} m/s+\frac{6.50}{7.38}m/s

\hat V=(-0.47,0.88) m/s

8 0
4 years ago
Which kind of air front forms when a warm air mass meets the area of a cooler air mass? A. stationary front B. cold front C. war
zaharov [31]
This would be a cold front that forms when a warm air mass meets the area of a cooler air mass, although it should be noted that this doesn't always feel "cold". 
3 0
3 years ago
Read 2 more answers
Other questions:
  • Long term exposure to ___________ waves can cause sunburns and skin cancer. A) visible B) infrared C) gamma rays D) ultraviolet
    10·2 answers
  • A dumbbell consists of two point-like masses M connected by a massless rod of length 2L. There are no external forces. If the du
    14·1 answer
  • What subatomic particle acts like a mini-magnet?
    7·1 answer
  • An object is cruising at 5 m/s. How far will it
    10·1 answer
  • A sample of the inert gas krypton has its pressure tripled. if the original volume is 12 l, what is the final volume in l
    10·1 answer
  • Susie walks 3 blocks north to the local CVS store, then 4 blocks east to her grandmother’s house. She then walks 2 blocks west a
    15·1 answer
  • Question 2
    12·1 answer
  • A long jumper can jump a distance of 7.4 m when he takes off at an angle of 45° with respect to the horizontal. Assuming he can
    14·1 answer
  • Mr. Galonski loves to use the electromagnetic spectrum. Create a scenario in his everyday life. Your scenario must include at le
    13·1 answer
  • Can anybody help me with this Physics question! (DUE TOMORROW) (WILL MARK BRAINLIST)
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!