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Mnenie [13.5K]
3 years ago
5

A 0.140-kg baseball traveling 34.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 19.0 cm

​
Physics
1 answer:
Eva8 [605]3 years ago
4 0
Add then subtract then u will get ur answer
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Write three nuclear equations to represent the nuclear decay sequence that begins with the alpha decay of u-235 followed by a be
vazorg [7]

Answer:

We know that in the decay process the sum of molecular number as well as molecular weight should be constant.

The following three reaction are as follows

1 .

Alpha decay  of parent nuclide

_{92}^{235}\textrm{U} \rightarrow _{90}^{231}\textrm{Th}+_{2}^{4}\textrm{alpha }

The molecular number of alpha particle is 2 and molecular weight is 4 g/mol.

2.

Beta decay of daughter nuclide

_{90}^{231}\textrm{Th}\rightarrow _{91}^{231}\textrm{Pa}+_{-1}^{0}\textrm{beta}+v

v is the neutrino emission,The charge on the beta particle is zero.

3.

Alpha decay

_{91}^{231}\textrm{Pa}\rightarrow_{89}^{227}\textrm{Pa}+_{2}^{4}\textrm{alpha}

5 0
4 years ago
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What is the name of the database that Tim Berners Lee built??​
dezoksy [38]

Answer:

ENQUIRE is the answer

Explanation: google....internet browser-.. .-.

7 0
3 years ago
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If your shirt is dyed so that it looks violet, which color of light is reflected by the dye?
Bad White [126]

Violet i took the test and it gave me the answer

4 0
3 years ago
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What is the force of an object with a mass of 30 kg that is free falling?
disa [49]

Answer:

F = 294.3 [N]

Explanation:

To solve this problem we must use Newton's second law which tells us that force is equal to the product of mass by acceleration. It is this particular case the acceleration is due to the gravitational acceleration since the body is in free fall.

Therefore we have:

F = m*g

where:

F  = force [N]

m = mass = 30 [kg]

g = gravity acceleration = 9.81 [m/s^2]

F = 30*9.81

F = 294.3 [N]

4 0
4 years ago
What is the kinetic energy of a penguin with a mass of 8 kg that is running at a speed<br> of 3 m/s?
kumpel [21]

mass (m) = 8kg
velocity (v) = 3 m/s²

Ke = ½mv²

ke = ½ mv²
½ × 8 × 3²
½ × 24²
12
8 0
3 years ago
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