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4 years ago

In what direction would the new b field point?

1 answer:

7 0

Please include more information about the problem. What "b field" are you talking about? What is different about it from the previous field?

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A bat hits a moving baseball. If the bat delivers a net eastward impulse of 0.80 N-s and the ball starts with an initial horizon

AURORKA [14]

Answer:

0.084 kg

Explanation:

I = 0.80 N-s (East wards) = 0.80 i N-s

u = 3.8 m/s = - 3.8 i m/s

v = 5.7 m/s = 5.7 i m/s

Let m be the mass of bat.

I = m (v - u)

0.8 i = m ( 5.7 i + 3.8 i)

0.8 i = m x 9.5 i

m = 0.084 kg

8 0

3 years ago

Which of the following is a reason that drivers prefer gasoline-powered engines to electric motors?

Nezavi [6.7K]

Your answer would be
D. Gasoline-powered cars are better for past acceleration and traveling at high speeds.

I just took this quiz and can confirm this is the correct answer!

Hope this helps :)

8 0

3 years ago

Read 2 more answers

A 7.0 kg bowling ball has a moment of inertia of 2.8x10-2 kg m2, and a radius of 0.10 m. If it rolls down the lane at an angular

slega [8]

Hi there!

Angular momentum is equivalent to:

$\large\boxed{L = I\omega}$

L = angular momentum (kgm²/s)

I = moment of inertia (kgm²)

ω = angular velocity (rad/sec)

Plug in the given values for moment of inertia and angular speed:

$L = (0.028)(40) = \boxed{1.12 kgm^2/s}$

8 0

2 years ago

When a person strikes and lights a match, potential energy in the match is transformed into which types of energy?

leva [86]

Answer:

thermal and radiant

Explanation:

- thermal energy refers to the energy transmitted through heat

- radiant energy refers to the energy transmitted through electromagnetic radiation, such as light

When the person lights the match, the match produces both heat (thermal energy) and light (radiant energy), so the correct answer is

thermal and radiant

7 0

3 years ago

Read 2 more answers

A mole runs 10 meters due East, then runs 9 meters due South, then runs 3 meters due North. The mole then burrows 2 meters down

Vladimir [108]

Let the directions are defined by vectors as following

East = + x direction

West = - x direction

North = + y direction

South = - y direction

upwards = + z direction

downwards = - z direction

So here we are given that it moves

1). 10 m East

2). 9 m South

3). 3 m North

4). 2 m down

So we can write it as

$d_1 = 10 \hat i$

$d_2 = 9 (-\hat j)$

$d_3 = 3 \hat j$

$d_4 = 2 (-\hat k)$

Now total displacement will be given as

$d = d_1 + d_2 + d_3 +d_4$

$d = 10 \hat i - 9 \hat j + 3 \hat j - 2 \hat k$

$d = 10 \hat i - 6 \hat j - 2 \hat k$

now the magnitude of the displacement will be

$d = \sqrt{10^2 + 6^2 + 2^2}$

$d = 11.8 m$

so the magnitude of displacement will be 11.8 m

7 0

3 years ago