1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alik [6]
3 years ago
9

A rectangular block of mass 30 kg measures 0.1 m by 0.4 m by 1.5 m.

Physics
2 answers:
ad-work [718]3 years ago
8 0

We have m=30\mathrm{kg} and g\approx10\mathrm{\frac{m}{s^2}}.

Calculate force (weight) by using F=mg.

F=mg=30\mathrm{kg}\cdot10\mathrm{\frac{m}{s^2}}=300\mathrm{N}

Hope this helps.

Oksanka [162]3 years ago
4 0

Answer:

294.30N

Explanation:

We use the following relationship to calculate the weight W of the block;

W=mg............(1)

where m is its mass and g is acceleration due to gravity. The value of g is taken as 9.81m/s^2, the mass of the object is given by m = 30kg. Hence;

W=30*9.81\\W=294.3N

You might be interested in
It is known that a shark can travel at a speed of 15 m/s.how far can a shark go in 10 seconds?
MrRissso [65]
If a shark can travel 15 miles per second, then it can go 150 miles in 10 seconds.
8 0
3 years ago
Read 2 more answers
g You drop a 3.6-kg ball from a height of 3.5 m above one end of a uniform bar that pivots at its center. The bar has mass 9.9 k
Salsk061 [2.6K]

Answer:

h = 3.5 m

Explanation:

First, we will calculate the final speed of the ball when it collides with a seesaw. Using the third equation of motion:

2gh = v_f^2 - v_i^2\\

where,

g = acceleration due to gravity = 9.81 m/s²

h = height = 3.5 m

vf = final speed = ?

vi = initial speed = 0 m/s

Therefore,

(2)(9.81\ m/s^2)(3.5\ m) = v_f^2 - (0\ m/s)^2\\v_f = \sqrt{68.67\ m^2/s^2}\\v_f = 8.3\ m/s

Now, we will apply the law of conservation of momentum:

m_1v_1 = m_2v_2

where,

m₁ = mass of colliding ball = 3.6 kg

m₂ = mass of ball on the other end = 3.6 kg

v₁ = vf = final velocity of ball while collision = 8.3 m/s

v₂ = vi = initial velocity of other end ball = ?

Therefore,

(3.6\ kg)(8.3\ m/s)=(3.6\ kg)(v_i)\\v_i = 8.3\ m/s

Now, we again use the third equation of motion for the upward motion of the ball:

2gh = v_f^2 - v_i^2\\

where,

g = acceleration due to gravity = -9.81 m/s² (negative for upward motion)

h = height = ?

vf = final speed = 0 m/s

vi = initial speed = 8.3 m/s

Therefore,

(2)(9.81\ m/s^2)h = (0\ m/s)^2-(8.3\ m/s)^2\\

<u>h = 3.5 m</u>

6 0
2 years ago
Forces that are opposite and equal are
Kisachek [45]

Answer:

space

Explanation:

6 0
2 years ago
The following items are connected in a circuit. in which one would you find a voltage gain?
timurjin [86]

Answer:

A

Explanation:

7 0
3 years ago
What is 6.9 × 107 written in standard form?
n200080 [17]
Answer: 6.9x 107 in standard form is 69,000,000

7 0
2 years ago
Read 2 more answers
Other questions:
  • A rubber block weighing 60. newtons is resting on a horizontal surface of dry asphalt. what is magnitude of the minimum force ne
    11·1 answer
  • Please help have no clue on this
    11·1 answer
  • Is the classification for an instrument that produces sound whne a string or strings stretched between two points is plucked?
    13·1 answer
  • HELP PLEASE WHOEVER ANSWERS CORRECT ILL MARK BRAINLIEST!
    15·1 answer
  • What is Friction<br>short note on friction​
    7·1 answer
  • I NEEEEEEEEEEEEEEEEDDDDDDDDDDDDDD HELLLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP RE
    10·1 answer
  • What are three biotic factors that can affect an organism after death?
    6·2 answers
  • What will happen when a light bulb is removed from the circuit below
    10·1 answer
  • how many helium-filled balloons would it take to lift a person? assume the person has a mass of 73 kgkg and that each helium-fil
    7·1 answer
  • Are the stack temperature and oxygen reasonable for these operating conditions? if not, what oxygen and stack temperature would
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!