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
serg [7]
3 years ago
7

James Bond is trying to escape his enemy on a speedboat but

Physics
1 answer:
SVEN [57.7K]3 years ago
3 0

Answer:

100 m/s

Explanation:

Mass the mass of Bond's boat is m₁. His enemy's boat is twice the mass of Bond's i.e. m₂ = 2 m₁

Initial speed of Bond's boat is 0 as it won't start and remains stationary in the water. The initial speed of enemy's boat is 50 m/s. After the collision, enemy boat is  completely stationary. Let v₁ is speed of bond's boat.

It is the concept of the conservation of momentum. It remains conserved. So,

m_1u_1+m_2u_2=m_1v_1+m_2v_2

Putting all the values, we get :

0+(2m_1)50=m_1v_1+(2m_2)(0)\\\\100m_1=m_1v_1\\\\v_1=100\ m/s

So, Bond's boat is moving with a speed of 100 m/s after the collision.

You might be interested in
A 7.75-l flask contains 0.482 g of hydrogen gas and 4.98 g of oxygen gas at 65°c. What is the partial pressure of oxygen in the
dimulka [17.4K]

Answer:

0.558 atm

Explanation:

We must first consider that both gases behaves like ideal gases, so we can use the following formula: PV=nRT

Then, we should consider that, whithin a mixture of gases, the total pressure is the sum of the partial pressure of each gas:

P₀ = P₁ + P₂ + ....

P₀= total pressure

P₁=P₂= is the partial pressure of each gass

If we can consider that each gas is an ideal gas, then:

P₀= (nRT/V)₁ + (nRT/V)₂ +..

Considering the molecular mass of O₂:

M O₂= 32 g/mol

And also:

R= ideal gas constant= 0.082 Lt*atm/K*mol

T= 65°C=338 K

4.98 g O₂ = 0.156 moles O₂

V= 7.75 Lt

Then:

P°O₂=partial pressure of oxygen gas=  (0.156x0.082x338)/7.75

P°O₂= 0.558 atm

3 0
3 years ago
Which statements are part of the safety protocol for this lab experiment? Check all that apply.
tekilochka [14]

Answer:

Always wear safety goggles when performing an experiment.

Use caution when dropping objects and/or launching them into the air.

Use only the materials that your teacher provides or approves.

Check the soda bottle and its cap for cracks and chips prior to use.

Report all accidents—no matter how big or small—to your teacher.

8 0
3 years ago
Read 2 more answers
A ______________ is a continuous flow of water in a single direction. *
Oxana [17]

Answer:

Current

Explanation:

I think srry if im wrong

5 0
3 years ago
Read 2 more answers
A compact disc rotates at 500 rev/min. If the diameter of the disc is 120 mm, (a) What is the tangential speed of a point at the
svlad2 [7]

Answer:

(a) the tangential speed of a point at the edge is 3.14 m/s

(b) At a point halfway to the center of the disc, tangential speed is 1.571 m/s

Explanation:

Given;

angular speed of the disc, ω = 500 rev/min

diameter of the disc, 120 mm

radius of the disc, r = 60 mm = 0.06 m

(a) the tangential speed of a point at the edge is calculated as follows;

\omega = 500 \ \frac{rev}{\min} \times \frac{2\pi \ rad}{1 \ rev} \times \frac{1 \min}{60 \ s} = 52.37 \ rad/s

Tangential speed, v = ωr

                               v = 52.37 rad/s  x 0.06 m

                              v = 3.14 m/s

(b) at the edge of the disc, the distance of the point = radius of the disc

   at half-way to the center, the distance of the point = half the radius.

r₁ = ¹/₂r = 0.5 x 0.06 m = 0.03 m

The tangential velocity, v = ωr₁

                                       v = 52.37 rad/s x 0.03 m

                                       v = 1.571 m/s

5 0
2 years ago
Mitchell records the amount of time a toy car takes to travel down a ramp one time for each of four slope angles. His lab partne
Alchen [17]

Explanation:

Experiments needs to be as accurate and precise as possible. Accuracy and precision helps to keep errors within reasonable limits as they are unavoidable.

How do can we now obtain an accurate and precise result?

After checking that all sources of errors are kept at bay and the procedures perfectly matches the hypothesis being test, it is best to repeat the experiment a few number of times.

Repeating an experiment is scientifically permitted as it helps to eliminate error to a reasonable extent.

Repeating an experiment will also help to authenticate Mitchell's claim and provide a confidence limit to draw a sound conclusion from.

From the repeated results, some statistical parameters that further provide solid backing for the hypothesis being tested will surface.

One of the key attribute of a hypothesis to be acceptable as being valid is that it must be repeatable.

Learn more:

Experiment brainly.com/question/5096428

#learnwithBrainly

4 0
3 years ago
Read 2 more answers
Other questions:
  • A train accelerates from 23m/s to 190m/s in 54 seconds. What was its acceleration?
    7·1 answer
  • Which sentence states Newton’s third law?
    11·1 answer
  • A singly ionized helium atom is in the ground state. It absorbs energy and makes a transition to the n = 3 excited state. The io
    8·1 answer
  • An 8.00 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. A particle of mass m is released from a point be
    15·1 answer
  • At what phase would you expect to find extremely high and low tides?
    7·1 answer
  • The force exerted on a bridge pier in a river is to be tested in a 1:10 scale model using water as the working fluid. In the pro
    14·1 answer
  • Light____.
    15·2 answers
  • A bulldozer does 45,000 joules of work to push a boulder a distance of 30 meters.
    12·1 answer
  • Students were asked to place a mint in their mouths and determine how long it took for the mint to dissolve. The condition of th
    7·2 answers
  • Based on the mass and speed data, which object will have the greatest amount of kinetic energy
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!