All categories

3 years ago

How long does it take a car traveling at 50 mph to travel 75 miles? Use one of the following to find the answer.

Physics

2 answers:

Anna35 [415]3 years ago

5 0

Answer:

1.5 hours

Explanation:

Using the equation t=d/v to solve for time:

t=75 miles ÷ 50 miles per hour = 1.5 hours

alexira [117]3 years ago

3 0

Answer:

1.25 miles/minute

Explanation:

i did the work on paper all of the ways worked but it taken me some time to finesh sorry if its wrong i tryed i hope i helped

You might be interested in

Lake Erie contains roughly 4.00 ✕ 1011 m3 of water. (a) How much energy is required to raise the temperature of that volume of w

denis-greek [22]

Answer:

Part a)

$Q = 6.36 \times 10^{18} J$

Part b)

$t = 144.11 years$

Explanation:

Part a)

Energy required to raise the temperature of water from 17.8 degree C to 21.6 degree C is given by formula

$Q = ms\Delta T$

here we know that

Here the volume of the water is given as

$V = 4.00 \times 10^{11} m^3$

now the mass of water is

$m = density \times volume$

$m = 4.00 \times 10^{14} kg$

now the heat required is

$Q = (4 \times 10^{14})(4186)(21.6 - 17.8)$

$Q = 6.36 \times 10^{18} J$

Part b)

As we know that power is supplied at

$P = 1400 MW$

so here we know

$P = \frac{Q}{t}$

so here we have

$t = \frac{Q}{P}$

$t = \frac{6.36 \times 10^{18}}{1400 \times 10^6}$

$t = 4.54 \times 10^9 s$

$t = 144.11 years$

7 0

3 years ago

A hockey puck with a mass of 0.175 kg slides over the ice. The puck initially slides with a speed of 5.25 m/s, but it comes to a

Neko [114]

Answer:

1.70 J

Explanation:

The heat dissipated is the difference in the kinetic energies.

This is given by

$E = \frac{1}{2}mv_f^2 - \frac{1}{2}mv_i^2$

$v_i$ and $v_f$ are the initial and final velocities.

With m = 0.175 kg,

$E = \frac{1}{2}\times0.175(2.85^2 - 5.25^2) = -1.701\text{ J}$

The negative sign appears because energy is lost.

7 0

3 years ago

Can you get your sphere to ever be fully lit (lit on both halves)? If not, why?

BartSMP [9]

Answer:

Explanation:

think of the sphere like earth, light isnt on both sides during day. Its just like a sphere it wont be fully light.

7 0

3 years ago

Read 2 more answers

An isobar connects areas of the same _____ _____. An isotherm connects areas of the

WINSTONCH [101]

Hi there!

So, I believe an isobar connects areas of the same atmospheric pressure, and an isotherm connects areas of the same temperature. Hope this helped :)

8 0

3 years ago

1. As described by the first law of thermodynamics, the change in internal energy of a system is equal to _____.

slava [35]

The first one is D
the second one is C

3 0

3 years ago

Read 2 more answers