3 years ago

Name the device used for measuring weight

Physics

1 answer:

Tpy6a [65]3 years ago

5 0

Answer:

spring scale

Explanation:

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Maximum range of a projectile is 1.6 m. Then the velocity of projection will be..... (g=10m/s)

qaws [65]

Answer:

4 m/s

Explanation:

From the question given above, the following data were obtained:

Maximum range (Rₘₐₓ) = 1.6 m

Acceleration due to gravity (g) = 10 m/s²

Initial velocity (u) =?

The initial velocity of the projectile can be obtained as follow:

Rₘₐₓ = u² / g

1.6 = u² / 10

Cross multiply

u² = 1.6 × 10

u² = 16

Take the square root of both side

u = √16

u = 4 m/s

Therefore, the velocity of the projectile is 4 m/s

6 0

3 years ago

A grocery shopper tosses a(n) 9.1 kg bag of

spin [16.1K]

Answer:

2.1 m/s

Explanation:

Momentum is conserved, so:

m₁ u₁ + m₂ u₂ = (m₁ + m₂) v

(9.1 kg) (6.6 m/s) = (9.1 kg + 19.3 kg) v

v = 2.1 m/s

3 0

3 years ago

Physical

zysi [14]

Answer: 2.5

Explanation:

4 0

3 years ago

Gasoline burns in the cylinder of an automobile engine. During the combustion reaction, the production of gas forces the piston

serg [7]

Answer:

$\Delta U = 1640 J$

Explanation:

As we know by first law of thermodynamics that for ideal gas system we have

Heat given = change in internal energy + Work done

so here we will have

Heat given to the system = 2.2 kJ

Q = 2200 J

also we know that work done by the system is given as

$W = 560 J$

so we have

$\Delta U = Q - W$

$\Delta U = 2200 - 560$

$\Delta U = 1640 J$

6 0

4 years ago

A string on the violin has a length of 24.20 cm and a mass of 0.0992 g. The fundamental frequency of the string is 659.3 Hz.

Alexus [3.1K]

Answer:

a. The speed of the wave is 319.1m

b. The tension in the string is 41.74N

Explanation:

Please see the attachments below

4 0

3 years ago

Name the device used for measuring weight​

Name the device used for measuring weight