All categories

3 years ago

Urgent need help 100 points

Physics

1 answer:

Sati [7]3 years ago

7 0

Answer: The velocity with which the sand throw is 24.2 m/s.

Explanation:

Explanation:

acceleration due to gravity, a = 3.9 m/s2

height, h = 75 m

final velocity, v = 0

Let the initial velocity at the time of throw is u.

Use third equation of motion

The velocity with which the sand throw is 24.2 m/s.

You might be interested in

Write down the equation that links energy transferred, charge flow, and potential difference.

laiz [17]

Answer:

The description of the given scenario is described in the explanation segment below.

Explanation:

As a charge passes through some kind of potential gap, the electrical task is undertaken as well as energy will be transferred.
The Potential difference seems to be an amount of work performed per unit charge and is denoted by "V" as well as a charge is denoted by "Q".

The energy transferred could be determined by using the following equation or formula:

⇒ Energy transferred = charge × potential difference

6 0

3 years ago

A ball hangs on the end of a string that is connected to the ceiling so that it swings like a pendulum. You pull the ball up so

saw5 [17]

Answer:

When extra energy is added

Explanation:

When the ball is released from rest and swings back towards your face, it will only pass closer to the end of the nose as per the initial conditions. However, when extra energy is added to the ball, it strikes the nose since its velocity and heights are increased. Therefore, the only condition under which the ball hits your nose is when extra energy is added to the system.

3 0

3 years ago

How do free-body force diagrams help you determine an object’s direction of motion?

finlep [7]

FBD provides a visual for every force that the object experiences. It can tell you the direction by showing the direction and magnitude of the forces. You can calculate the net force, example being that the applied force is 300N and the force of friction is 100N, the net force is 200N in the direction of the applied force. (Fnet= Fa- Ff).

6 0

3 years ago

You are a pirate working for dread pirate roberts. you are in charge of a cannon that exerts a force 20000 n on a cannon ball wh

Crazy boy [7]

Refer to the diagram shown below.

F = 2000 N, the force exerted on the cannonball
L = 2.41 m, the length of the barrel
V₀ = 83 m/s, the launch velocity
θ = 35°, the launch angle

Let m = the mass of the cannonball.
Let a = the acceleration of the ball when fired.

The net force acting on the ball is
F - mg sinθ = 2000 - 9.8*m*sin(35°) = 2000 - 5.621*m N

Then, from Newton's Law of motion,
F = ma
2000 - 5.621*m = m*a (1)

The launch velocity is V₀ = 8.3 m/s, therefore
V₀² = 2*a*L
(83 m/s)² = 2*(a m/s²)*(2.41 m)
6889 = 4.82*a
a = 6889/4.82 = 1429.25 m/s² (2)

Insert (2) into (1)
2000 - 5.621*m = 1429.25*m
2000 = 1434.871*m
m = 1.394 kg

Answer: 1.394 kg

4 0

4 years ago

Which is equal to a temperature of 20°C? 20°F 68°F 36°F 32°F

Dahasolnce [82]

The correct answer would be 68°F because (20°C × 9/5) + 32 = 68°F.

4 0

4 years ago

Read 2 more answers