Passengers in an auto traveling at 16.0 m/s toward the east hear a siren frequency of 950 Hz from an emergency vehicle approaching them from behind at a speed (relative to the air and ground) of 40.0 m/s The speed of sound in air is 340m/s. What frequency do the passengers in the auto hear after the emergency vehicle passes them?

Why is buying the correct size for an infant or child often difficult?

Find an example car (or other vehicle) battery, and compute how many of the AAA batteries in the previous problem it would take to equal the energy stored in it. Which is more compact?

Determine how far the vehicle travels in 3 hours.

• A helicopter travels 240 miles every 2 hours.

What are the results of buying as an LLC versus as a sole proprietorship?

What should you consider before buying exercise equipment ?

Repeat Previous Problem for a front-wheel-driven vehicle.

How have changes in shopping options affected clothes buying?

Calculate the centripetal force on a $75 \overline{0}-\mathrm{kg}$ vehicle rounding a curve of radius $40.0 \mathrm{~m}$ at $30.0 \mathrm{~km} / \mathrm{h}$ ?

A $2800,\text{kg}$ space vehicle, initially at rest, falls vertically from a height of $3300 \mathrm{~km}$ above the Earth's surface. Find how much work is done by the force of gravity in bringing the vehicle to the Earth's surface.

The quadratic equation y = 0.0056x^2 + 0.14x represents a vehicle's stopping distance as a function of the vehicle's speed in kilometers per hour. a. Find the stopping distance for a vehicle traveling 100 km/h. b. Write an equation to find the speed of a vehicle that took 50 m to stop. Use a calculator graph or table to solve the equation.

Para cada uno de los verbos a continuación, trata de dar por lo menos un modismo que conozcas o que hayas oido. Luego escribe una oración con ese modismo. Puedes consultar un diccionario si es necesario.

MODELO

• meter

Escribes meter la pata

Héctor metió la pata cuando dijo que Daniel le caia mal.

echar

For the following exercise,

Use the Law of Cosines to solve for the missing angle of the oblique triangle. Round to the nearest tenth.

$a=14, b=13, c=20$; find angle $C$.

Find the oblique asymptote, and sketch the graph of $\boldsymbol{f}$.

$$f(x)=\frac{x^2-x-6}{x+1}$$