All categories

3 years ago

URGENT

Physics

1 answer:

olga55 [171]3 years ago

3 0

If the boat's speed is s, and the river's speed is r, and the boat is traveling east (0 degrees),

(0,r) + (s cos297,s sin297) = (6,0)

now just solve for r and s.

Pls mark me as brainliest

You might be interested in

A flat circular coil having a diameter of 25 cm is to produce a magnetic field at its center of magnitude, 1.0 mT. If the coil h

tresset_1 [31]

Answer:

The current pass through the coil is 6.25 A

Explanation:

Given that,

Diameter = 25 cm

Magnetic field = 1.0 mT

Number of turns = 100

We need to calculate the current

Using the formula of magnetic field

$B =\dfrac{\mu_{0}NI}{2\pi r}$

$I=\dfrac{B\times2\pi r}{\mu N}$

Where, N = number of turns

r = radius

I = current

Put the value into the formula

$I=\dfrac{1.0\times10^{-3}\times2\pi\times12.5\times10^{-2}}{4\pi\times10^{-7}100}$

$I=6.25\ A$

Hence, The current passes through the coil is 6.25 A

6 0

3 years ago

Ignoring air resistance, an object in free fall will fall d feet in t seconds, where d and t are related by the algebraic mode

Lostsunrise [7]

Explanation:

Given that,

An object in free fall will fall d feet in t seconds, where d and t are related by the algebraic model as :

$d=16t^2$ ..........(1)

(a) We need to find the time taken by the object to fall 1148 ft. Put this in equation (1) as :

$16t^2=1148$

$t=\sqrt{71.75}$

t = 8.47 seconds

(b) If the object is in free fall for 18.5 sec after it is dropped, then the height of the object is given by :

$d=16(18.5)^2$

d = 5476 ft

Hence, this is the required solution.

7 0

4 years ago

Select the correct answer. What did Galileo discover when he dropped two cannon balls of different weights from the Leaning Towe

hoa [83]

Galileo successfully demonstrated that the balls took the same amount of time to reach the ground.

Choice B

5 0

3 years ago

Consider that a clay model of a tiger has a mass of 0.195 kg and glides on ice at a speed of 0.75 m/s. It hits another clay mode

juin [17]

Answer:

The final velocity after the collision is 0.27 m/s.

Explanation:

Given that,

Mass of tiger, m = 0.195 kg

Initial speed of tiger model, v = 0.75 m/s

Mass of another clay model, m' = 0.335 kg

Initially, second model is at rest, v' = 0

We need to find the final velocity after the collision. It is a case of inelastic collision. Using the conservation of linear momentum as :

$mv+m'v'=(m+m')V\\\\V=\dfrac{mv+m'v'}{(m+m')}\\\\V=\dfrac{0.195\times 0.75}{(0.195 +0.335 )}\\\\V=0.27\ m/s$

So, the final velocity after the collision is 0.27 m/s.

6 0

4 years ago

Which part of a circuit changes electrical energy into another form of energy

aniked [119]

Answer:

The reactive part of a circuit changes electrical energy into another form of energy.

Explanation:

The reactive part of a circuit changes electrical energy into another form of energy.

The inductive part of a circuit changes electrical energy to magnetic energy and the capacitive part of a circuit changes electrical energy to electrostatic energy.

6 0

4 years ago