2 years ago

Who is the president of Africa

Physics

2 answers:

defon2 years ago

8 0

Currently, the president of Africa is Jacob Gedleyihlekisa Zuma.

djverab [1.8K]2 years ago

8 0

Jacob Gedleyihlekisa Zuma is the president of South Africa. He was elected in 2009, and reelected in 2014.

You might be interested in

A body of mass 500kg moving at a speed of 10m/s reaches the speed of 50m/s in 20s.The force exerted is

Leona [35]

Answer:

answer is 1000 N

formula used-

F= m x (v-u/t)

mark this as brainliest!

6 0

2 years ago

How much heat is needed to raise the temperature of a 100.0g of water by 85.0 c?

KatRina [158]

Answer:

35.7kJ

Explanation:

we can calculate the amount of heat energy required , using this formula

Q = mcθ

where.

Q = heat energy (Joules, J)

m = mass of a substance (kg)

c = specific heat capacity (units $Jkg^{-1} C^{-1}$ )

θ = change in temperature (Celcius,C or Kelvin K)

Assume Specific heat capacity (c) of water = $4200Jkg^{-1} C^{-1}$

mass =0.1 kg

$Q=0.1 kg*4200Jkg^{-1} C^{-1}*85C\\=35700J\\=35.7kJ$

3 0

2 years ago

Your friend just challenged you to a race through an obstacle course. You know in order to beat him, you must run 30 meters with

seropon [69]

Answer:

Velocity = 0.5 m/s South (A)

Explanation:

You need to determine the average rate of velocity.

The equation you will use is velocity = displacement/time

The displacement is 30m South.

The time is 60 seconds.

Plug into the equation Velocity = 30m South/60 s

Velocity = 0.5 m/s South

3 0

2 years ago

If the voltage in a wire is 10 volts, and the current is 5 amps, what is the resistance in the wire? Show work. Please put units

aniked [119]

Answer:2 ohm

Explanation:

5 0

2 years ago

What is (4.2 x 10 to the fifth power) time (4.0 times 10 to the negative ninth power)

luda_lava [24]

(4.2*10^5)*(4*10^-9) = 1.68* 10^-3

8 0

2 years ago