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4 years ago

Taste and smell are called chemical senses because:

Physics

1 answer:

Bingel [31]4 years ago

3 0

Answer:

The answer is a," their receptors are sensitive to chemical molecules."

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You push your bike with an average pedaling force of 150N over a distance of 20 m going uphill. How much energy have you transfe

kodGreya [7K]

Answer:

jojo reference

Explanation:

3 0

3 years ago

If mr galans paces is equal to 1.8 m,how many paces would it take to get to the moon

Anettt [7]

Answer:

The number of paces it would take to get to the Moon is 213,555,556 paces

Explanation:

The given length of Mr Galan's paces = 1.8 m/pace

The distance from the Earth to the Moon is, 384,400 km = 384,400,000 m

Therefore, the number of paces, "n", it would take to get to the Moon from the Earth is given as follows;

n = (The distance from the Earth to the Moon)/(The length of each Mr Galan's paces)

∴ n = 384,400,000 m/(1.8 m/pace) = 213,555,556 paces

The number of paces it would take to get to the Moon = n = 213,555,556 paces

5 0

3 years ago

4. A car of mass 2000 kg is traveling at 45 m/s when the driver spots a policeman anead. i ne univer apprivo

MariettaO [177]

Answer:

The change in the Kinetic Energy of the car, E = 1449000 joules

Explanation:

Given,

The mass of the car, m = 2000 Kg

The speed of the car, v = 45 m/s

The brake applied on the car for a duration, t = 3 s

The average force applied by the brake, F = 1.4 x 10⁴ N

The kinetic energy of the body is given by the relation,

K.E = 1/2 mv²

The initial kinetic energy of the car,

K.E = 0.5 x 2000 x 45

= 2025000 J

The force applied by the brakes

F = m x a

Therefore, the deceleration of the car

a = F / m

= 1.4 x 10⁴ / 2000

= 7 m/s²

Using the first equations of motion,

v = u + at

v = 45 + (-7) (3) ∵ (-7 ) car is decelerating

v =24 m/s

The final kinetic energy of the car

k.e = 0.5 x 2000 x 24

= 576000 J

The difference in the kinetic energy,

E = K.E - k.e

= 2025000 J - 576000 J

= 1449000 joules

Hence, the change in the Kinetic Energy of the car, E = 1449000 joules

3 0

3 years ago

a 2.6 kg block is attached to a horizontal spring that has a spring constant of 126 N/m. At the instant when the displacement of

NeTakaya

Answer:

The acceleration of the object is $5.57\ m/s^2$ .

Explanation:

Given that,

Mass of the block, m = 2.6 kg

Spring constant of the spring, k = 126 N/m

At the instant when the displacement of the spring from its unstained length is 0.115 m. We need to find the acceleration of the object.

When the block is displaced, the force acting on the spring is equal to the force due to its motion. Such as :

$kx=ma$

a is acceleration of the object

$a=\dfrac{kx}{m}\\\\a=\dfrac{126\times 0.115}{2.6}\\\\a=5.57\ m/s^2$

So, the acceleration of the object is $5.57\ m/s^2$ .

8 0

3 years ago

A car drives on a highway with speed of 68mi/h. what is this speed in km/h?

My name is Ann [436]

Answer: 109 kilometers per hour.
(I got 109.435 then rounded it)

8 0

3 years ago