Answer:

**Answer:**

**0.99m**

**Explanation:**

Firs you calculate the relative velocity between the boat and the wave. The velocity of the boat is 5m/s and the velocity of the wave is given by:

the relative velocity is:

This velocity is used to know which is the distance traveled by the boat after 20 seconds:

Next, you use the general for of a wave:

you take the amplitude as 2.0/2 = 1.0m.

by replacing the values of the parameters in f(x,t) you obtain the vertical displacement of the boat:

An electron is accelerated by a 5.9 kV potential difference. das (sd38882) – Homework #9 – yu – (44120) 3 The charge on an electron is 1.60218 × 10−19 C and its mass is 9.10939 × 10−31 kg. How strong a magnetic field must be experienced by the electron if its path is a circle of

A square coil (length of side = 24 cm) of wire consisting of two turns is placed in a uniform magnetic field that makes an angle of 60° with the plane of the coil. If the magnitude of this field increases by 6.0 mT every 10 ms, what is the magnitude of the emf induced in the coil?

While on a hike, a pair of friends get caught in a thunderstorm. Four seconds after seeing the flash of a distant lightning strike, they hear the thunder. How far away was this lightning strike in miles? Note: sound, in air, travels at 340 m/s.

A periodic wave travels from one medium to another. Which pair of variables are likely to change in the process? A. velocity and wavelength B. velocity and frequency C. frequency and wavelength D. frequency and phase E. wavelength and phase

Suppose that an object undergoes simple harmonic motion, and its displacement has an amplitude A = 15.0 cm and a frequency f = 11.0 cycles/s (Hz). What is the maximum speed ( v ) of the object?A. 165 m/sB. 1.65 m/sC. 10.4 m/sD. 1040 m/s

A square coil (length of side = 24 cm) of wire consisting of two turns is placed in a uniform magnetic field that makes an angle of 60° with the plane of the coil. If the magnitude of this field increases by 6.0 mT every 10 ms, what is the magnitude of the emf induced in the coil?

While on a hike, a pair of friends get caught in a thunderstorm. Four seconds after seeing the flash of a distant lightning strike, they hear the thunder. How far away was this lightning strike in miles? Note: sound, in air, travels at 340 m/s.

A periodic wave travels from one medium to another. Which pair of variables are likely to change in the process? A. velocity and wavelength B. velocity and frequency C. frequency and wavelength D. frequency and phase E. wavelength and phase

Suppose that an object undergoes simple harmonic motion, and its displacement has an amplitude A = 15.0 cm and a frequency f = 11.0 cycles/s (Hz). What is the maximum speed ( v ) of the object?A. 165 m/sB. 1.65 m/sC. 10.4 m/sD. 1040 m/s

Lets write the data down. That will help us solve the problem later:

R = 36 m

θ = 18º

m = 1492 kg

μ = 0.67

g = 9.8 m/s²

Lets draw all the forces that act on the car:

In order to the car won't skidding to the outside of the curve we must have the centripetal force equals the friction force:

I attached a Diagram for this problem.

We star considering the system is in equlibrium, so

Fm makes with vertical

Fm makes 70 with vertical

Applying summatory in X we have,

We know that W is equal to

Substituting,

*For the second part we know that the reaction force Fj on deltoid Muscle is equal to Fm, We can assume also that*

The lightning bolt that moves 50.0 C of charge is converted to qe units. The conversion factor is 1 coulumb is equivalent to 6.24150975·10^18 e. Thus, converting 50 C to e is:

50.0 C * (6.24150975x10^18 e)/1C

equals 3.120754875x10^20 e

50.0 C * (6.24150975x10^18 e)/1C

equals 3.120754875x10^20 e

**Answer: ****There are number of electrons.**

**Explanation:**

We are given 50 Coulombs of charge and we need to find the number of electrons that can hold this much amount of charge. So,** to calculate that we will use the equation:**

where,

n = number of electrons

Charge of one electron =

Q = Total charge = 50 C.

**Putting values in above equation, we get:**

**Hence, there are number of electrons.**

b 2.5 m/s

c 10 m/s

d 5.2 m/s

**Answer:**

**Explanation:**

Step one:

given data

mass of ball m1=5kg

initial velocity of ball u1=10m/s

mass of pin m2=2kg

initial velocity of pin u2= 0m/s

final velocity of ball v2=8m/s

final velocity of pin v2=?

Step two:

The expression for elastic collision is given as

m1u1+m2u2=m1v1+m2v2

substituting we have

5*10+2*0=5*8+2*v2

50+0=40+2v2

50-40=2v2

10=2v2

divide both sides by 2

v2=10/2

v2=5m/s

The pin's final velocity is 5m/s

**Answer:**

**Length = 2.453 m**

**Explanation:**

Given:

Resistivity of the wire (ρ) = 1 × 10⁻⁶ Ω-m

Diameter of the wire (d) = 0.250 mm = 0.250 × 10⁻³ m

Resistance of the wire (R) = 50 Ω

Length of the wire (L) = ?

The area of cross section is given as:

We know that, **for a constant temperature, the resistance of a wire is directly proportional to its length and inversely proportional to its area of cross section. The constant of proportionality is called the resistivity of the wire. **Therefore,

Expressing the above in terms of length 'L', we get:

Plug in the given values and solve for 'L'. This gives,

Therefore, **length of No. 30 wire (of diameter 0.250 mm) is 2.453 m.**

536 J of energy.

Calculate the power output of the cake mixer.

A

I DONT KNOW

And electric light bulb mix it is used for nine. Two seconds in that temperature transfers one 536 J of energy calculate shin is 2+2 is 4-1 that’s three quick maths exclamation is calculate the power work output of the kitchen