answer.
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
Ymorist [56]
2 years ago
12

A plane is flying at 1000 meters above the ground and fires a laser 60 degrees of of straight down. what is the distance the lig

ht traveled to the ground?
Mathematics
1 answer:
juin [17]2 years ago
5 0

Answer:

Step-by-step explanation:

The distance the light traveled to the ground is the range of the plane expressed as:

R = U*√2H/g

U is he velocity

H is the max height

g is the acc. due to gravity

Let us get U first using the formula

H = u²sin²Ф/2g

1000 = u²sin²60/2(9.81)

1000*19.62 = 0.8660u²

19620 = 0.8660u²

u² = 19620/0.8660

u² = 22655.88

u = √22655.88

u = 150.52m/s

Next is to get the range

R = 150.52√2(1000)/9.81

R = 150.52 √2000/9.81

R = 150.52√203.87

R = 150.52*14.28

R = 2149.16m

Hence the distance the light traveled to the ground is 2,149.16m

You might be interested in
Pete took a sample of moviegoers to see how many are seeing a comedy. Sample size: 175 Number seeing a comedy: 42 Population: 1,
Anastaziya [24]

Answer: Part A : c = n.p

Part B = 366 moviegoers

Step-by-step explanation: In part A, to predict the number of moviegoers, we have to find the <u>proportion</u> of the sample that does the activity, which will called <u>p</u>. Since <u>p</u> is a percentage, to determine how many moviegoers are seeing a comedy, you multiply it by the sample size, <u>n</u>.

Therefore: c = n.p

For part B, based on the the sample:

p = \frac{42}{175} = 0.24

The total population is given: 1,525

c = 0.24.1,525

c = 366

Based on the sample, <u>366</u> <u>people</u> are seeing a comedy.

3 0
2 years ago
A geometric sequence has an initial value of 3 and a common ratio of 2. Which function(s) or formula(s) could represent this sit
olasank [31]

Answer:

The functions that represent this situation are A. f(n)=3\cdot 2^{n-1} and C. a(n)=a(n-1)\cdot 2; a(1)=3.

Step-by-step explanation:

A geometric sequence goes from one term to the next by always multiplying or dividing by the same value.

In geometric sequences, the ratio between consecutive terms is always the same. We call that ratio the common ratio.

This is the explicit formula for the geometric sequence whose first term is <em>k</em> and common ratio is<em> r:</em>

<em>                                                 </em>a(n)=k\cdot r^{n-1}<em />

This is the recursive formula of that sequence:

                                                 a(1)=k\\\\a(n)=a(n-1)\cdot r

We know that the first term is <em>k</em> = 3 and the common ratio is <em>r = </em>2. Therefore,

The explicit formula is f(n)=3\cdot 2^{n-1} and the recursive formula is a(n)=a(n-1)\cdot 2; a(1)=3.

6 0
2 years ago
A postcard in the shape of a parallelogram has an area of 12in^2. What are two possible lengths of bases and heights for the pos
Tpy6a [65]

A postcard is in the shape of a parallelogram. A parallelogram  is a quadrilateral with two pair of parallel sides, opposite sides and opposite angles are equal.

Since, the postcard has an area of 12 square inches.

Since, area of parallelogram = base \times height

As area of parallelogram is 12, it means that the product of base and height is 12 square inches.

So, the possible dimensions of postcard are 3 inches and 4 inches and 2 inches and 6 inches.

So, base = 3 inches , height = 4 inches or base = 4 inches , height = 3 inches.

So, base = 2 inches, height = 6 inches or base = 6 inches , height = 2 inches.

8 0
2 years ago
Driving to your friend's house, you travel at an average rate of 35 miles per hour. On your
Mamont248 [21]

Answer:

14 miles.

Step-by-step explanation:

Let the distance traveled from home to destination = x miles.

Speed while going to friend's house = 35 miles per hour.

Speed while coming back = 40 miles per hour.

Total Time taken for the journey = 45 minutes = 0.75 hours.

Let the time taken while going to friend's house = y hours.

Therefore, the time taken while going to friend's house = (0.75 - y) hours.

To find x and y, model the speeds of both the journeys.

Speed while going to friend's house = Distance/Time.

35 = x/y.

x = 35y (Equation 1).

Speed while coming back = Distance/Time.

40 = x/(0.75 - y).

x = 40(0.75 - y) (Equation 2).

Since x = x, therefore:

35y = 30 - 40y.

75y = 30.

y = 30/75.

y = 0.4 hours.

Put y = 0.4 hours in Equation 1:

x = 35y.

x = 35(0.4).

x = 14.

Therefore, the distance between my friend's house and my house is 14 miles!!!

4 0
2 years ago
Read 2 more answers
Hiroto’s texting plan costs $20 per month, plus $0.05 per text message that is sent or received. Emilia’s plan costs $10 per mon
neonofarm [45]

Answer:

both plans cost the same when 50 texts are sent. you answered correctly

Step-by-step explanation:


7 0
2 years ago
Read 2 more answers
Other questions:
  • What is the completely factored form of the expression 16x2 + 8x + 32?
    17·1 answer
  • Ellen takes a multiple choice quiz that has 5 questions with 4 answers choices for Each question. What is the probability that s
    13·1 answer
  • Radium decays according to the function Q(t) = Q0e-kt where Q represents the quantity remaining after t years and k is the decay
    15·1 answer
  • Find the area of the following circle. (Round answer to the nearest whole number.) Circumference = 280 cm. (Hint: Find r from C
    9·2 answers
  • Ken wants to purchase a boat. The purchase price of the boat is $ 15 , 000. The dealership will allow him to pay cash or finance
    9·1 answer
  • In a network of 40 computers, 5 hold a copy of a particular file. Suppose that 7 computers at random fail. Let F denote the numb
    10·1 answer
  • At a particular restaurant, each onion ring has 70 calories and each slider has 200 calories. A combination meal with onion ring
    7·1 answer
  • Dan invests £1200 into his bank account.
    8·2 answers
  • Ronnie surveyed students to find out which school sport they participated in. Below are the results from the first ten people he
    10·1 answer
  • Please help! Find the domain of y = 4 square root 4x + 2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!