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SCORPION-xisa [38]
3 years ago
6

A hollow ball weighs 40 newtons. In a water tank, it displaces 15 newtons of water. What is the buoyant force on the ball? Will

the ball float or sink? Explain your reasoning.
Physics
1 answer:
motikmotik3 years ago
4 0

Answer:

25N

it will float since the water displaced is less than the weight. buoyancy = 25n down

Explanation:

40 newtons - 25 newtons = 25 newtons

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Which type of coolant(s) usually is (are) used to remove heat from a nuclear reactor core?
Ilya [14]

Answer:

(B). Liquid sodium or water

Explanation:

I don't know how to explain this But hope it right!

If I'm wrong I'm sorry

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6 0
3 years ago
A truck with a mass of 1330 kg and moving with a speed of 15.0 m/s rear-ends a 805 kg car stopped at an intersection. The collis
Dovator [93]

Answer:

The Speed of the vehicles is 9.34m/s

Explanation:

For an elastic collision the two bodies move with similar velocities after collision

Given

M1=1330kg

V1=15m/s

M2=805kg

V2=0(the car is parked on neutral)

The formula is

M1V1+M2V2=(M1+M2)V

1330*15+805*0=(1330+805)V

19950+0=2135V

2135V=19950

divide both sides by 2135

V=19950/2135

V=9.34m/s

8 0
3 years ago
A block with mass M = 7.50 kg is initially moving up the incline with speed v 0 and is increasing speed with acceleration a = 3
valina [46]

Answer:

F = 96.11 N

friction force =33.48 N

Explanation:

given,

mass of block M = 7.50 kg

acceleration = 3 m/s²

µ s = 0.443 and µ k = 0.312

angle with the horizontal = 25°

the component of force along the incline is F cos theta

normal reaction ,

N = mg cos \theta + F sin \theta

N = 7.5\times 9.81\times cos25^0 + F sin 25^0

N = 66.68+ .423 F

for the mass

F cos \theta - mg sin \theta - \mu_k\ N = ma

F cos 25^0 - 7.5\times 9.81\times sin 25^0 - 0.312\times ( 66.68+ .423 F) = 7.5\times 3

0.906 F - 0.132 F - 31.09 - 20.8 = 22.5

0.774F = 74.39

F = 96.11 N

normal force ,

N = 66.68 + .423×96.11

  =107.33 N

friction force = .312 × N

                     = 0.312× 107.33

friction force =33.48 N

                 

3 0
3 years ago
The high point on a wave is called its _________
Nataly [62]

Answer:

I believe its called the crest

Explanation:

8 0
3 years ago
Read 2 more answers
7.
m_a_m_a [10]
I think it’s 5.0 X 10 8Hz
5 0
3 years ago
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