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
tankabanditka [31]
3 years ago
9

An archerfish, peering from just below the water surface, sees a grasshopper standing on a tree branch that's just above the wat

er. The archerfish spits a drop of water at the grasshopper and knocks it into the water. The grasshopper's initial position is 0.45 m above the water surface and 0.25 m horizontally away from the fish's mouth. The launch angle of the drop is 63° with respect to the water surface. Anticipating that the grasshopper would do this, the archerfish decides to spit the water at a higher speed but at the same launch angle (63°). At what speed should the archerfish spit the water for the drop to hit the grasshopper?
Physics
1 answer:
Mariana [72]3 years ago
4 0

Answer:

Explanation:

let the velocity of throw is u .

Time to reach horizontally .25 m is equal to reach .45 m vertically

t = .25 / u cos63

= .55 / u

For vertical motion

- h = - ut + 1/2 gt²

-.45 = -usin63 x .55 / u + .5 x9.8 (.55 / u )²

-.45 = - .49 + 1.48 / u²

.04 = 1.48 / u²

u² = 37

u = 6.08  m /s

You might be interested in
How much heat does it take to raise the temperature of 10.0 kg of water by 1.0 C?
fomenos

Answer:The specific heat capacity of water is 4,200 joules per kilogram per degree Celsius (J/kg°C). This means that it takes 4,200 J to raise the temperature of 1 kg of water by 1°C.

Explanation:

7 0
3 years ago
Nitrous oxide is the chemical name for “laughing gas.” What are the names and the number of atoms in a molecule of nitrous oxide
Vesnalui [34]
2 nitrogen molecules and 1 oxygen molecule

6 0
3 years ago
Organism undergo constant chemical changes as they maintain an internal balance known as?
Aleks04 [339]
The answer is homeostasis.
3 0
3 years ago
Read 2 more answers
Which of the following electromagnetic waves has the shortest wavelength?
Mrac [35]


from shortest wavelength to longest:

Ultraviolet

visible

infrared

microwave

so the answer is B

4 0
3 years ago
What is the Kinetic Energy of a 1200 kg object that is moving with a speed of 24 m/s
SVEN [57.7K]

Kinetic Energy = 1/2mv^2

m= 1200kg

v= 24 m/s

KE = 1/2 (1200kg)(24m/s)^2 = 345,600 N

8 0
3 years ago
Other questions:
  • Fill in the blank
    8·2 answers
  • in 1992 Maurizio damilano ,of italy walked 29752m in 2.00h( a) calcula damilano's average in m/s. suppose damilano slows down to
    11·1 answer
  • Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×10^6 N, one at an angle 14.0∘ west of north,
    10·1 answer
  • Peter left Town A at 13:30 and travelled towards Town B at an
    11·1 answer
  • "A light beam incident on a diffraction grating consists of waves with two different wavelengths. The separation of the two firs
    9·1 answer
  • A professor's office door is 0.91 m wide, 2.0 m high, and 4.0 cm thick; has a mass of 25 kg; and pivots on frictionless hinges.
    15·1 answer
  • Suppose for your cookout you need to make 100 hamburgers. You knoe that 2.00 pounds will make 9 hamburgers. How many pounds will
    9·2 answers
  • MEASUREMENT
    12·1 answer
  • If there's air in a ball and it bounces how come a room doesn't bounce
    15·1 answer
  • URGENTE. ¿Qué fuerzas actúan en un tobogán?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!